Iran said Monday it will surpass from June 27 its uranium stockpile limit set under the nuclear deal with world powers, turning up the pressure after the US walked away from the landmark pact last year.

"Today the countdown to pass the 300 kilogrammes reserve of enriched uranium has started and in 10 days time... we will pass this limit," Iran's atomic energy organisation spokesman Behrouz Kamalvandi said at a press conference broadcast live.

The move "will be reversed once other parties live up to their commitments," he added, speaking from the Arak nuclear plant south-west of Tehran.

President Donald Trump's inner circle is growing smaller and smaller, and the few aides he trusts are afraid to deliver any bad news to him -- and panelists on MSNBC's "Morning Joe" agreed the situation was dangerous.

Co-host Mika Brzezinski asked Associated Press reporter Jonathan Lemire if the president trusted any of his advisers, and the White House correspondent said he may still seek out counsel from Ivanka Trump.

"He might listen to his daughter, who is in there, but no," Lemire said. "That has been what's happened over the last year and a half, in particular, is the erosion of the guardrails, the erosion of adults in the room who could walk in there and say something. Mind you, it didn't always work, (but) now those people don't even exist."

The push by the group, a super PAC called Engage Texas, comes as national Democrats zero in on the state in 2020.

With national Democrats looking to make Texas a battleground, a new Republican group is launching to register hundreds of thousands of new voters here and convince them to help keep the state red in 2020.

The group, a super PAC named Engage Texas, is the brainchild of some of the state's biggest GOP donors, and it is led by a former top staffer at the Republican National Committee. It comes as Texas Republicans look to gain ground in an area where their Democratic counterparts have dominated in recent years: signing up new voters.