US President Donald Trump on Sunday criticised the 2015 Iran nuclear agreement, calling it “one of the worst deals ever made” and blaming former President Barack Obama’s administration for what he said was a flawed path toward Iran potentially acquiring a nuclear weapon.

In a post on his Truth Social platform, Trump contrasted the Obama-era accord with ongoing negotiations under his own administration, saying talks with Tehran were “proceeding in an orderly and constructive manner” and that he had instructed negotiators not to rush a deal.

“The Blockade will remain in full force and effect until an agreement is reached, certified, and signed,” Trump wrote, adding that “there can be no mistakes” in any final arrangement.

Trump said Iran “cannot develop or procure a Nuclear Weapon or Bomb,” while also suggesting that relations between Washington and Tehran were becoming “more professional and productive.”

He also thanked countries in the Middle East for their cooperation and said regional alignment could be strengthened through the expansion of the Abraham Accords, a set of US-brokered normalisation agreements between Israel and several Arab states. He added that Iran could “perhaps” join the accords in the future.