Oil surges after Iran targets US airbase in retaliation
Neutral Summary
Oil prices surged more than three percent on Thursday after Iran’s Islamic Revolutionary Guard Corps (IRGC) said it targeted a U.S. airbase in retaliation for an early morning American strike near Bandar Abbas airport. The IRGC stated the attack occurred at 0450 local time, though it did not identify which base was hit. The escalation comes despite a ceasefire between the United States and Iran that took effect in early April, raising fresh doubts about the durability of the truce.
Brent crude futures rose $3.51, or 3.72 percent, to $97.80 a barrel by 0344 GMT, while U.S. West Texas Intermediate gained $3.31, or 3.73 percent, to $91.99. The gains reversed a more than five percent drop in the previous session, which had been driven by speculation that a U.S.-Iran deal could reopen the Strait of Hormuz. According to an anonymous U.S. official, American forces shot down four Iranian attack drones and struck a ground control station in Bandar Abbas that was about to launch a fifth drone. The IRGC warned that any repeat of aggression would draw a “more decisive” response and said responsibility for consequences lay with the “aggressor.”
The exchange of fire underscores the fragility of the ceasefire, which had already been strained by earlier U.S. strikes described as “self-defence” actions. ANZ commodity strategist Daniel Hynes noted that oil supply remains constrained and key sticking points have yet to be resolved. Meanwhile, U.S. crude stockpiles fell by 2.8 million barrels last week, the sixth straight weekly decline, according to American Petroleum Institute data. Official inventory figures from the U.S. Energy Information Administration are expected later Thursday.
Source Articles
Source Coverage
16 sources covered this event.
Sources that covered this story
Publication Timeline
Shows when each source published their article. The green dot marks the first source to publish. Use search to find a source and zoom to spread clustered labels.
Conflicting Claims (3)
When multiple sources report the same topic but with mutually exclusive details (different numbers, opposite outcomes), Prism flags these as conflicting claims.
Each card shows the two versions, which sources support each side, and an explanation of the disagreement. This does not determine which version is correct — it highlights where sources diverge.
Source Analysis Overview
Coverage % = percentage of consensus claims this source included (higher = more comprehensive).
Subjectivity % = proportion of subjective language detected (lower = more objective).
Leaning = classifier-detected political framing pattern (Left / Center / Right).
Click any column header to sort. Expand "Detailed Charts" below for full visualizations.
| Source | Coverage % | Subjectivity % | Leaning | Profile |
|---|---|---|---|---|
| Offshore Engineer | 61% | 0% | center |
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| CNA | 53% | 0% | center |
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| AsiaOne | 53% | 0% | center |
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| see.news | 44% | 0% | right |
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| وكاله عمون الاخباريه | 42% | 0% | center |
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| B92 | 35% | 0% | center |
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| Gulf Daily News Online | 29% | 0% | right |
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| lunaticoutpost.com | 23% | 0% | center |
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Coverage Completeness
How coverage is measured: Prism extracts atomic claims ("nuggets") from every article covering this event using an LLM, then deduplicates them into a consensus claims pool — the set of all claims reported by at least one source.
Each article is then scored by an LLM judge on how many of these consensus claims it includes. Claims can be supported (clearly stated), partially supported (implied or incomplete), or not supported (omitted).
Weighted score: Partial support counts as 50%. "Vital" claims (confirmed by 3+ sources) are weighted 2× more heavily, so omitting a widely-reported claim penalizes the score more than omitting a claim only one source mentioned.
A score of 100% means the article covered every consensus claim. Lower scores indicate more claims were omitted.
What percentage of consensus claims did each source's article include? Vital claims (confirmed by multiple sources) are weighted more heavily. Higher is more comprehensive.
Tone (Objectivity)
How objectivity is measured: Each sentence in the article is run through a subjectivity classifier (GroNLP/mdebertav3-subjectivity-english), a DeBERTa model trained to distinguish objective from subjective language.
Rather than a simple yes/no, each sentence gets a continuous subjectivity probability from 0% (fully objective) to 100% (fully subjective). The article's score is the average across all its sentences.
Labels: Highly Objective (<10%) · Mostly Objective (10-15%) · Mixed (15-22%) · Mostly Subjective (22-30%) · Highly Subjective (>30%)
Lower scores indicate more neutral, information-focused reporting. Higher scores indicate more opinionated or narrative-driven language.
Average subjectivity probability across all sentences. Lower means more objective reporting.
Framing (Political Leaning)
How framing is measured: Each sentence in the article is run through a political leaning classifier (matous-volf/political-leaning-politics), a model trained to detect left, center, and right-leaning language patterns.
Each sentence produces three probability scores — left, center, and right — which are averaged across all sentences to give the article's overall framing profile.
The stacked bar shows the proportion of each leaning. The dominant leaning is whichever scored highest.
This measures language patterns, not accuracy. An article can use left-leaning framing while reporting the same claims as other sources, or vice versa.
Classifier-detected political framing patterns in each article's language.
Claims Coverage Matrix (5 Headline / 106 Total)
Prism extracts atomic claims from every source's article and builds a consensus claims pool — the combined set of claims reported across all coverage.
Each row is one consensus claim. Each column is a news source. Cells show whether the source reported, partially mentioned, or omitted that claim.
Tiers: Claims are ranked by importance — Headline (T1) are the most critical, Context (T2) provide supporting detail, and Detail (T3) are minor points shown only when expanded.
Vital claims are confirmed by 40%+ of sources, indicating broad consensus.
Claims are organized into themes for easier navigation. Click a theme to expand or collapse it.
| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T1
Iran's Revolutionary Guards said they targeted a U.S. airbase
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T1
The targeting was in response to a US attack near Bandar Abbas airport
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T2
The U.S. military launched new strikes in Iran targeting a military site
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T2
U.S. officials believed the targeted site posed a threat to U.S. forces and commercial maritime traffic in the Strait of Hormuz
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T2
An anonymous US official told Reuters the military shot down four Iranian attack drones.
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T2
The US military struck a ground control station in the port city of Bandar Abbas.
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T2
U.S. military carried out strikes targeting an Iranian drone operation near the Strait of Hormuz
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T2
The U.S. attack in the port city of Bandar Abbas prompted the Iranian response
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T3
The Islamic Revolutionary Guard Corps said on Thursday it targeted a U.S. airbase
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T3
The ground control station was about to launch a fifth drone.
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T3
IRGC said it targeted a U.S. base in response to an early morning U.S. attack near Bandar Abbas airport
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T3
A U.S. official told Reuters about the strikes
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T3
A US official told Reuters the targeted site was believed to pose a threat to US forces and commercial maritime traffic in the strait
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T3
The Revolutionary Guards described an early morning US attack.
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T3
These actions were measured, purely defensive and intended to maintain the ceasefire
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T3
The IRGC said they targeted the U.S. airbase from which the attack on the control station was launched
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T3
The IRGC did not say which US base it had targeted
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T3
Earlier this week, Washington said it had launched 'self-defence strikes'
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T3
Those strikes targeted boats that were allegedly laying mines
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T3
A Washington official said the strikes targeted an Iranian drone operation
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T3
Bandar Abbas is a port city
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T3
The strikes targeted a military site that officials believed posed a threat to U.S. forces
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T3
Iran released footage of its military response to an American attack near Bandar Abbas airport.
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T3
The U.S. military struck a site on the outskirts of Bandar Abbas airport using air-launched missiles.
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T3
The attacks occurred in the early hours of Thursday morning.
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T3
The IRGC announced it targeted a U.S. airbase at 4:50 a.m. local time.
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T3
The IRGC did not disclose the location of the targeted American base, according to Mehr News Agency.
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T3
The U.S. military carried out new strikes overnight on military sites in Iran.
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T3
Four Iranian combat drones that posed a threat around the Strait of Hormuz were shot down.
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T3
A U.S. official reported the strikes and drone shootdown occurred earlier today.
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T3
The U.S. official spoke on condition of anonymity.
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T3
An Iranian ground control station in Bandar Abbas was hit in the airstrike.
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T3
The U.S. official said the actions were 'purely defensive and aimed at maintaining the ceasefire.'
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| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T1
Brent crude futures rose $2.34, or 2.48 per cent, to $96.63 a barrel by 0701 GMT
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T1
Both benchmarks had slipped more than 5% to touch their lowest in a month in the previous session
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T2
U.S. West Texas Intermediate futures were up $2.26, or 2.55 per cent, at $90.94
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T3
Oil prices jumped more than 2 per cent on Thursday
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T3
July Brent contract is set to expire on Friday
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T3
The July contract is set to expire on Friday
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T3
More active August Brent contract gained 2.43% ($2.24) to $94.49
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T3
Oil prices jumped more than three per cent on Thursday (May 28)
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T3
US West Texas Intermediate futures were up US$3.31, or 3.73 per cent, at US$91.99
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T3
The more active August contract gained $2.24 or 2.43 per cent, to $94.49
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T3
Oil prices surged again due to the escalation.
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T3
Oil prices surged after reports of escalation in hostilities
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T3
Oil prices fell more than 5% on Wednesday
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T3
Oil prices rebounded after reports of the escalation
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T3
U.S. crude futures gained more than 3%
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|
T3
Stocks fell
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T3
The dollar rose
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T3
They touched their lowest in a month in the previous session
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T3
Brent crude futures LCOc1 reached $96.63 a barrel by 0701 GMT
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T3
The more active August contract LCOc2 gained $2.24
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T3
U.S. West Texas Intermediate futures CLc1 were up $2.26
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T3
U.S. WTI futures rose 2.55%
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T3
U.S. WTI futures reached $90.94
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T3
The more active August contract gained US$3.35 or 3.63 per cent, to US$95.6
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T3
The more active August Brent contract gained $2.45 or 2.66%, to $94.70
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T3
The more active August Brent contract gained $3.35 or 3.63 per cent to $95.6
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| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T1
The IRGC warned that any repeat of aggression would draw a 'more decisive' response
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T3
Tasnim news agency reported the IRGC statement
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T3
IRGC said responsibility for the consequences of any retaliation lies with the 'aggressor'
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T3
IRGC said this response is a serious warning to the enemy that it must understand that an act of aggression will not go unanswered
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T3
Iran's Revolutionary Guards warned that any repeat of aggression would draw a more decisive response
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T3
Tasnim news agency reported the statement from Iran's Revolutionary Guards
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T3
The information is according to Tasnim news agency
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T3
The statement was reported by Tasnim news agency
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T3
The Revolutionary Guards warned that any repeat of aggression would draw a 'more decisive' response
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T3
Iranian forces stated that any repeat of aggression would provoke a 'more decisive' response.
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T3
Iranian forces stated that responsibility for consequences lies with the aggressor.
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| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T2
The previous session's decline was on the possibility of a U.S.-Iran deal to end their war and reopen the Strait of Hormuz
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T2
A ceasefire between the US and Iran took effect in early April.
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T2
Trump rejected a reported draft deal regarding the Strait of Hormuz.
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T2
The escalation in hostilities dampened hopes for a peace deal.
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T2
The exchange of fire adds to growing uncertainty over whether the US-Iran ceasefire will hold
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T3
Trump said no single country would control the Strait of Hormuz.
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T3
The ceasefire is tenuous.
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T3
President Donald Trump rejected a report he was close to a compromise deal with Tehran
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T3
Kuwait said it was responding to missile and drone attacks without identifying the source
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T3
Kuwait hosts a large U.S. base
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T3
Israel reported sounding sirens regarding hostile aircraft activity in northern Israel
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T3
Israel has been fighting Iran-backed Hezbollah militants in southern Lebanon
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T3
Tehran claimed those strikes were a violation of the truce
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|
T3
The drop was on the possibility of a U.S.-Iran deal to end their war
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T3
The deal would also reopen the Strait of Hormuz
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T3
The ceasefire came into effect on April 8.
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| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T2
U.S. crude oil stockpiles fell by 2.8 million barrels last week
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|
T3
Official inventory data from the U.S. Energy Information Administration are due on Thursday
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|
T3
The stockpile data came from the American Petroleum Institute
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|
T3
The decline in stockpiles was the sixth straight week of declines
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|
T3
The EIA data is a day later than usual due to the Memorial Day holiday on Monday
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|
T3
That was the sixth straight week of declines in U.S. crude stockpiles
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|
T3
The data release is a day later than usual due to the Memorial Day holiday on Monday
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T3
The data came from American Petroleum Institute data
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|
T3
The decline was the sixth straight week of declines
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|
T3
The American Petroleum Institute provided the inventory data
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| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T3
Two supertankers exited the Strait of Hormuz earlier this week with their transponders switched off
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T3
One liquefied natural gas tanker exited the Strait of Hormuz with its transponder switched off
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T3
The ships are heading for India and China
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|
T3
Shipping data from LSEG and Kpler showed the tanker movements
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| Claim | lunaticoutpost.com | B92 | AsiaOne | وكاله عمون الاخباريه | Offshore Engineer | CNA | see.news | Gulf Daily News Online |
|---|---|---|---|---|---|---|---|---|
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T2
Simon-Peter Massabni said: 'The rise in oil prices highlights the fragility of the current no peace, no war situation between the United States and Iran'
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T2
Simon-Peter Massabni said: 'While the market holds onto hopes that the conflict is nearing an end, the increasing frequency of skirmishes... suggests that this conflict may continue. As a result, the Strait of Hormuz is likely to remain closed'
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T3
ANZ commodity strategist Daniel Hynes said oil supply remains constrained and key sticking points have yet to be resolved
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|
T3
Analyst John Evans said 'It appears that the trading of airstrikes are part of the negotiating language'
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T3
Massabni said: 'the increasing frequency of skirmishes between the two sides, coupled with Donald Trump's evident frustration, suggests that this conflict may continue'
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T3
Massabni said: 'the Strait of Hormuz is likely to remain closed'
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