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First tankers cross strait after Iran deal; Israeli strikes stir doubt in Lebanon

Published by Global Banking & Finance Review

Posted on June 18, 2026

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· Last updated: June 18, 2026

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First tankers cross strait under Iran deal; Israeli strikes raise doubt in Lebanon

Impact of Iran Deal and Ongoing Conflict in Lebanon

By Maya Gebeily, Rami Ayyub and Zohra Bensemra

First Tankers Transit the Strait of Hormuz

BEIRUT/JERUSALEM/QLAILIEH, Lebanon, June 18 (Reuters) - Three Saudi-flagged supertankers carrying 6 million barrels of crude sailed through the Strait of Hormuz on Thursday, hours after U.S. President Donald Trump signed a deal with Iran to end the war that has disrupted global energy supplies.

Continued Instability in Lebanon

But in Lebanon, where more than a million people are displaced by the fighting, Israeli forces launched fresh airstrikes on Thursday morning, raising doubt about how far Trump will go to force his wartime allies to halt an offensive he has now pledged to end.

Terms of the U.S.-Iran Memorandum

Trump put his signature on Wednesday on the "memorandum of understanding" to end the war, as did Iran's President Masoud Pezeshkian, bringing it into effect two days earlier than previously expected. It calls for the immediate opening of the Strait of Hormuz and lifting of a U.S. blockade of Iran's ports.

Though shippers say it will still take time for transit across the strait to reach pre-war levels, with a need yet to ensure safe access and clear mines, there were immediate signs of an impact.

Ships which once might have concealed their positions by switching off their transponders were now broadcasting their locations, poised to transit the strait.

Benchmark Brent crude futures prices fell by another 2% to below $78 a barrel, lowest since the shooting began.

The U.S.-Iranian memorandum starts the clock on a 60-day negotiation period to reach a final settlement to the war, which Trump launched in February alongside Israeli Prime Minister Benjamin Netanyahu.

Lebanon’s Exclusion and the Memorandum’s Stipulations

MEMORANDUM EXPLICITLY CALLS FOR END OF WAR IN LEBANON

But Israel, which launched an invasion in March and has since seized a large swathe of southern Lebanon in its pursuit of Hezbollah militants who opened fire across the border in support of Iran, was excluded from the negotiations.

Iran’s Position and U.S. Concessions

Iran has always said any peace deal must also cover Lebanon. In an apparent major concession to Iran, the memorandum signed by Trump explicitly calls for the "permanent termination" of the war in Lebanon and for its "territorial integrity and sovereignty" to be ensured.

With Lebanon among the peace effort's most delicate issues, Trump in recent days has become openly critical of his ally's operations there, accusing Israel of unnecessarily destroying entire buildings to hit Hezbollah fighters.

Israel’s Response and Buffer Zone

Israel has said it has no intention of withdrawing from Lebanon, whatever Trump negotiates. It released a new map on Thursday showing an expanded southern area occupied by its troops, which it describes as a buffer zone.

Two Israeli officials, including a senior official close to Netanyahu, told Reuters Israel was holding negotiations with the United States to keep Israeli troops in Lebanon.

The senior official described those talks with Washington as "stubborn" and said Israel would not back down. The other official said the outcome would depend on whether Trump "decides to force the issue" by threatening repercussions on Israel.

Renewed Violence and Human Impact in Lebanon

While fighting in Lebanon tamped down at the start of this week when Trump first announced the deal had been reached, it has ticked up again over the past few days, and continued on Thursday morning after Trump's signature.

Lebanese State news agency NNA said three people were killed in Israeli airstrikes on the southern Lebanese towns of Kfartebnit and Zebdine on Thursday. Reuters reporters heard an Israeli drone flying low over Beirut and its southern suburbs.

Voices from the Displaced

'IN LEBANON IT'S NOT OVER YET', SAYS DISPLACED LEBANESE MAN

"Iran and the Americans are done. Fine. In Lebanon it's not over yet,” said Mohammed Doghman, a man displaced from the southern city of Nabatieh to Beirut, who was sitting outside his tent on Thursday, squinting hard at his phone to read the news.

"They should give us a final answer: has the war ended for good, or will we return to it again?"

In Qlailieh, in southern Lebanon near the port of Tyre, a few displaced residents had ventured back to survey the ruins of their homes, flattened into piles of concrete rubble that many compared to Gaza.

Tyre resident Abdelkarim al-Dahi compared Israel and Hezbollah to the feuding cat and mouse in Tom and Jerry cartoons: "They don't stop."

U.S.-Israeli Relations and Political Fallout

Netanyahu has boasted for years of a particularly close relationship with Trump, which yielded major shifts in U.S. policy in Israel's favour during the Republican president's first term, and ultimately the joint decision to wage war on Iran this year.

But Trump's apparent shift over Lebanon has abruptly given rise to one of the biggest rifts in U.S.-Israeli relations in decades. The U.S. memorandum of understanding with Iran has been lamented in Israel across the political spectrum.

"Soon, Israel may be forced to choose: Either keep up the military pressure and lose Trump’s diplomatic support, or stay on his good side — but only by ending, or scaling back, the conflict that many see as the country’s most urgent fight," the Times of Israel wrote on Thursday.

Trump’s War Objectives and Negotiation Outcomes

When Trump launched the war nearly four months ago, he said his aims were to destroy Iran's nuclear programme, end its ability to strike its neighbours, prevent it from supporting allied militants in the region and make it possible for Iranians to topple their hardline leaders.

Though he initially demanded Iran's "unconditional surrender", Trump ultimately signed the agreement with none of those objectives met.

U.S. officials say the upcoming negotiations could still yield a strong agreement on Iran's nuclear programme, and that they retain important leverage over Tehran, including threats from Trump to resume bombing if he is unsatisfied.

But Trump's critics, including some hawks in his own party, say Iran is in a stronger position now than before the war, havin

Key Takeaways

  • First supertankers transiting Strait of Hormuz signals easing of U.S.–Iran blockade and cooling of global oil prices.
  • Brent crude futures dropped notably following the deal, hitting multi‑month lows as markets anticipate resumed energy flows.
  • Despite the U.S.–Iran memorandum calling for a permanent end to the war in Lebanon, Israeli airstrikes and drone operations on June 18 underscore ongoing conflict dynamics.

Frequently Asked Questions

Why did Saudi-flagged oil tankers sail through the Strait of Hormuz?
The tankers crossed the Strait after a US-Iran deal was signed, opening oil transit routes previously blocked by conflict.
How has the US-Iran deal impacted global oil markets?
The deal led to immediate oil shipments, boosting market confidence and causing Brent crude prices to fall by 2%.
What is happening in Lebanon despite the Iran deal?
Israeli forces launched new airstrikes in Lebanon, raising doubts about a regional ceasefire despite the US-Iran agreement.
Does the US-Iran deal affect operations in Lebanon?
While the memorandum calls for peace in Lebanon, Israeli military actions continue, and negotiations regarding Lebanon's status persist.
Were ships concealing their positions before the deal?
Previously, some ships turned off transponders due to safety concerns, but after the deal, vessels began broadcasting their locations openly.

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