President of the United States Donald Trump embraced possible regime change in Iran on Friday and declared that there would soon be "extraordinary power" in the Middle East, after the Pentagon sent a second aircraft carrier to the region.

Trump's military moves and tough statements come at a time when Washington and Tehran seek to revive diplomacy over Tehran's long-running nuclear dispute with the West.

A source familiar with the matter told Reuters that US envoys Steve Witkoff and Jared Kushner will hold negotiations with Iran on Tuesday in Geneva, with representatives from Oman acting as mediators. The source said Witkoff and Kushner will also meet with officials from Russia and Ukraine on Tuesday in Geneva, in the US effort to end the war in Ukraine.

Asked if he wanted regime change in Iran, Trump replied that “it seems like that would be the best thing that could happen.” He declined to say who he wanted to take control of Iran, but said “there are people.”

“For 47 years, they’ve talked and talked and talked,” Trump said after a military event at Fort Bragg, North Carolina. “Meanwhile, we’ve lost a lot of lives while they’ve been talking. Broken legs, broken arms, broken faces. We’ve been going on for a long time.”

Washington wants nuclear talks with Iran to also include the country's ballistic missiles, support for armed groups in the region and treatment of the Iranian people. Iran has said it is prepared to discuss limits on its nuclear program in exchange for sanctions relief, but has ruled out linking the issue to missiles.

Trump has threatened to attack Iran if a deal is not reached, while Tehran has vowed to retaliate, fueling fears of a wider war as the US builds up forces in the Middle East. The US targeted Iran's nuclear facilities in strikes last year.

When asked what was left to target at the nuclear sites, Trump said “dust.” He added: “If we do that, that would be the bare minimum of the mission, but we’ll probably get whatever’s left.”