[Source: Reuters]

A fragile two-week ceasefire between the U.S. and Iran showed further strain on Friday, a day before they are ​to negotiate in Pakistan, as Washington accused Tehran of breaching promises on the Strait of Hormuz and Israel struck Lebanon with attacks that Iran has ‌claimed violate the truce.

There was no sign Iran was lifting its near-total blockade of the strait, which has caused the worst-ever disruption to global energy supplies.

Tehran cited Israel’s ongoing attacks on Lebanon, which included the heaviest strikes of the war on Wednesday, as a key sticking point.

U.S. President Donald Trump said in a social media post late Thursday that Iran was doing a “very poor job” of allowing oil to go through ​the strait. “That is not the agreement we have!”

In a separate post, he said oil would start flowing again, without saying what actions the U.S. might take.

In the ​first 24 hours of the ceasefire, which Trump announced on Tuesday, just a single oil products tanker and five dry bulk carriers sailed ⁠through the strait, which typically carries a fifth of the world’s oil and liquefied natural gas flows and 140 ships a day before the war.

FRESH ATTACKS

Israel’s military said early on ​Friday it had struck 10 launchers in Lebanon that fired rockets toward northern Israel on Thursday evening, and that Iran-allied armed group Hezbollah launched a missile at Israel, triggering air sirens.

The ​missile was intercepted, according to the Times of Israel. Hezbollah said it had targeted Israeli military infrastructure in the northern city of Haifa.

The U.S. and Israel have said the latest ceasefire does not include Lebanon, which Israel invaded last month – in parallel with the war on Iran – to root out Hezbollah.

But Iran and Pakistan, which acted as mediator, say Lebanon was explicitly part of the deal.

Iran’s Parliament Speaker Mohammad Baqer ​Qalibaf, expected to head the Iranian delegation opposite U.S. Vice President JD Vance, said on social media that Lebanon and the rest of Iran’s “axis” of regional allies were inseparable parts ​of any ceasefire.

In a defiant statement, Iran’s Supreme Leader Ayatollah Mojtaba Khamenei said on Thursday that Iran would exact retribution for the war.

“We will certainly not leave unpunished the criminal aggressors who attacked our ‌country. We ⁠will undoubtedly demand compensation for every single damage inflicted,” he said in the statement.

The agreement for a two-week truce, mediated by Pakistan, came just hours before a deadline that Trump said would trigger U.S. attacks on Iran’s power plants and bridges and the destruction of “a whole civilization.”