U.S. President Donald Trump announced Thursday that the United States is “very close” to reaching a nuclear agreement with Iran, signaling a potential breakthrough in diplomatic efforts to contain Tehran’s nuclear ambitions.

Speaking during his visit to Doha, part of a broader Gulf tour, Trump stated that the U.S. is “very serious” about negotiations with Iran aimed at achieving a long-term peace deal. He added that Iran has “somewhat agreed” to the terms of a possible agreement, though he did not provide specific details.

Trump’s remarks come following his visit to Saudi Arabia, and he is expected to travel next to the United Arab Emirates as part of a regional effort to reinforce diplomatic and security ties.

As of yet, Iranian officials have not issued any public statements confirming or commenting on the reported progress in the negotiations.