Iran live updates: Negotiators believe they have draft deal, leaders haven't approved

Iran's Islamic Revolutionary Guard Corps said in a statement on Thursday that it attacked the U.S. airbase from which American forces launched strikes on Bandar Abbas.

"This response is a serious warning to the enemy that any act of aggression will not go unanswered, and if repeated, our response will be even more decisive," the IRGC said in the statement, which was carried by the state-owned Press TV channel's Telegram account.

"The aggressor bears full responsibility for the consequences," the IRGC added.

-ABC News' Morgan Winsor

The U.S. has carried out new airstrikes in southern Iran targeting a military site that was believed to pose a threat to U.S. forces and commercial maritime traffic in the Strait of Hormuz, according to a U.S. official.

The U.S. military also intercepted and shot down multiple Iranian drones that posed a similar threat, according to the official.

Speaking at a cabinet meeting on Wednesday, President Donald Trump said the Iranians "want very much to make a deal," but an agreement hasn't been reached yet.

"We're not satisfied with it, but that we will be. Either that or we'll have to just finish the job," Trump said.

"Iran cannot have a nuclear weapon. I'm doing that for the world. I'm not doing it just for us," Trump said.

The White House addressed reports on an initial memorandum of understanding between the U.S. and Iran on Wednesday, saying that negotiations are "proceeding nicely" and that the president would only make a deal "which must ensure that Iran can never have a nuclear weapon."

"As President Trump has said, negotiations are proceeding nicely and he has made his redlines clear. President Trump will only make a good deal for the American people, which must ensure that Iran can never have a nuclear weapon," White House spokesperson Olivia Wales said in a statement when asked about the reports.