The statement came after Israel said it had carried out strikes against Iran-backed Hezbollah targets in Beirut’s southern suburbs, further complicating efforts to end the wider Middle East conflict.

Iranian chief negotiator Mohammad Bagher Ghalibaf said the strikes showed that the United States either lacked the willingness or ability to implement its commitments.

“If you do not have the will or the ability to fulfil your commitments, then there is no point in talking about continuing down this path,” Ghalibaf said in a statement on social media.

Trump had previously said an agreement with Iran was expected to be signed soon and that the Strait of Hormuz would reopen immediately after the deal. Iran, however, has given a less certain timeline.

Iran has insisted that any agreement must also address the conflict in Lebanon, where Hezbollah has been involved in fighting with Israel. Iranian Brig. Gen. Mohammad Jafar Asadi said Israeli strikes “will not go unanswered.”

A US official said the proposed agreement included Lebanon, which became involved in the wider conflict after Hezbollah launched rockets toward Israel.
Pakistan and Qatar have acted as mediators in the negotiations. A Qatari delegation arrived in Tehran on Sunday to help facilitate the finalisation of a possible agreement, according to a diplomat familiar with the matter.

The parties have given different accounts of the proposed deal, including disagreements over the future of Iran’s nuclear programme and control of the Strait of Hormuz.

Iran has said it will maintain authority over the strategic waterway, while Washington has rejected that position. The US has imposed a blockade affecting Iranian ports, while Iran has restricted movement through the strait.

Another major issue remains Iran’s enriched uranium stockpile. Tehran says its nuclear programme is peaceful, while Israel, the United States and other Western governments have expressed concerns over potential military use.

On Sunday, Israel issued evacuation warnings for 29 villages in southern Lebanon. Israel said its strikes in Beirut were carried out in response to Hezbollah fire toward Israeli territory.

Lebanon’s civil defence agency said at least three people were killed and six wounded in the strike. Israel’s military also said three suspected Hezbollah drones struck northern Israel but caused no casualties.