US President Donald Trump said he had cancelled planned strikes against Iran after negotiations reached and were approved at the highest level of Iranian leadership, in a post on his Truth Social platform on June 11.

The announcement, if confirmed, would mark an abrupt de-escalation in a confrontation that had seen US strikes on Iranian targets, the interdiction of tankers in the Gulf and an Iranian declaration that it had closed the Strait of Hormuz, though key details including the terms and the timing of any signing remained unannounced.

Trump said discussions and final points had been approved by all parties, listing the United States, Israel, Saudi Arabia, the United Arab Emirates, Qatar, Turkey, Pakistan, Bahrain, Kuwait, Jordan and Egypt, according to the post. He said a naval blockade would remain in force until the arrangement was finalised, with the time and place of a signing to be announced.

The post did not set out the substance of the agreement, and there was no immediate confirmation from Iran or the other governments named.

In response, the Islamic Revolutionary Guard Corps said its forces stood ready to deliver an immediate and punishing response to any miscalculation by its adversaries, Tabnak reported. The statement, which did not reference any negotiations, described a missile and drone operation it termed "True Promise 3" as having shifted regional security balances in Iran's favour, and named senior commanders it said had been killed in the fighting.

The reported cancellation followed earlier Trump posts threatening to hit Iran hard and signalling an intent to take the Kharg Island oil terminal.

IRGC Major General Ali Abdollahi, commander of the Khatam al-Anbia Central Headquarters, said that in light of recent US threats against Iran's oil infrastructure, either oil and gas exports would be available for all or they would be possible for none, according to the statement.

He warned that if the United States again carried out attacks against Iran, it would receive a stronger response than before, and that the resulting conflict would spread beyond the region, the statement said.

Abdollahi said the United States "spoke of agreement and negotiation while acting with hostility," and that this contradiction was the main cause of insecurity in the region, endangering the security of international trade and the Strait of Hormuz in particular.

Israeli officials speaking with Tel Aviv-based i24 News said, ‘We are surprised by Trump’s announcement, we need to see what the Iranians publish to determine if it's accurate,’ two Israeli officials told the station. 

According to an Israeli source, "Everyone lives off Trump's tweets. We need to hear what the Iranians publish to know whether the president is indeed accurate in his assessment. Experience shows that not so much..."