The blockade "started 10 o'clock," according to the president. Other countries have offered to help, he added, without elaborating.
Trump praised Vice President Vance for negotiating with Iranian officials in Pakistan, and confirmed that disagreements persisted over the nuclear issue at the negotiations.
"He's done a good job. [Special Envoy] Steve [Witkoff] and Jared [Kushner], they've all done a very good job ... We've been called by the other side [Iran]. They'd like to make a deal very badly," Trump claimed when asked whether he intends to dispatch Vance in the event of another round of negotiations.
The US will extract enriched uranium from Iran - possibly by force, unless a deal is reached. Trump said.
"I think they will agree to it. I'm almost sure of it. In fact, I am sure of it. If they don't agree, there's no deal. There'll never be a deal. Iran will not have a nuclear weapon," Trump said.
The US may also “stop by Cuba” after finishing with Iran, according to the president.
"Well, we're going to see with Cuba. Cuba is another story. Cuba has been a terribly run country for a long time. It's got a bad system...Cuba is a failing nation...We may stop by Cuba after we're finished with this, but Cuba is a nation that has been horribly run for many years by Castro," Trump said.