Amid threats by Iran to activate sleeper cells in the United States in retaliation for the strikes on its nuclear facilities over the weekend, attention has turned to a 22-year-old Trump administration appointee overseeing the prevention of terrorist attacks in the U.

President Donald Trump got a warning from Iran that it has sleeper cells in the U.S. that could act in retaliation for his air strikes over the weekend — and a former CIA director is alarmed. NBC News' national security and military correspondent Courtney Kube told MSNBC on Monday that in the days leading up to Trump's decision to bomb Iran,

A reactor in Tehran is a monument to the U.S. relationship with Iran when the country was led by a secular, pro-Western monarch.

Trump announced on Saturday that the United States had completed a “very successful attack” on Iran’s key nuclear facilities — including Fordo, Natanz and Isfahan — in a post on his Truth Social platform. He wrote that a “full payload of BOMBS” were dropped, and U.S. planes were safely on their way home.

Israel’s military says it is striking around Iran’s western city of Kermanshah, as fears of a wider regional conflict loom large after the United States inserted itself into Israel’s war by attacking

Although the operation achieved an impressive level of tactical success, with a swarm of warplanes penetrating Iran unchallenged following a long, undetected flight from Missouri, it will be far harder than the president has suggested to reliably evaluate the damage inflicted on Iran’s ability to manufacture a nuclear weapon.

President Trump announced earlier Saturday night that the U.S. had launched strikes against three Iranian nuclear sites.

The United States dropped bombs onto three Iranian nuclear sites late Saturday, in what President Donald Trump called "a spectacular military success." Before the smoke could clear, and even before Iran launched their own missile strikes on Israel to counter the U.