US President Donald Trump posted on Truth Social that he gave Iran "chance after chance to make a deal" but they "just couldn't get it done," warning of escalating military action if Tehran refuses negotiations.

Trump stated he told Iranian officials "in the strongest of words" to make an agreement, adding that "the United States makes the best and most lethal military equipment anywhere in the world, by far, and that Israel has a lot of it, with much more to come."

Iran had been set to conduct the sixth round of negotiations with the United States in Oman on June 15 but those meetings have now been cancelled due to the repeated strikes by Israel on the Islamic Republic. 

The American President claimed, "certain Iranian hardliners spoke bravely, but they didn't know what was about to happen. They are all dead now, and it will only get worse."

Trump warned that whilst "there has already been great death and destruction," there remains "time to make this slaughter, with the next already planned attacks being even more brutal, come to an end."

The President urged Iran to "make a deal, before there is nothing left, and save what was once known as the Iranian Empire," stating "no more death, no more destruction, just do it, before it is too late."

Trump's social media post, published at 5:56 AM on June 13, received 290 reposts and 1,010 likes within hours of publication.

The message follows Israeli strikes on Iranian nuclear facilities and military installations, with Trump suggesting coordinated US-Israeli military planning for potential future operations against Iranian targets.

The President's ultimatum represents the strongest American warning to Iran since the current escalation began, threatening complete destruction of Iranian military capabilities unless Tehran agrees to negotiations.