The head of the U.N. nuclear watchdog agency says Iran's enriched uranium "is still there," as he stresses the urgency of diplomacy to avert a U.S.-Iran war.

Texas Sen. Ted CRuz told FOX News on Thursday night that "it is entirely possible that in the next six months we’ll see regimes fall in Iran, in Venezuela, and in Cuba." "And we could also see governments replace them that want to be friends with the United States of America,

The U.S. has said the White House wants to ink a deal with Tehran, but has alluded to military action if no agreement is signed.

President Trump is pressuring Iran to either curtail its nuclear program or face military strikes, after Iran amassed a large stockpile of highly enriched uranium. Here's what to know.

Tensions reach a boiling point as Trump weighs a massive air campaign against Tehran. With over 50 F-35 and F-22 jets deployed and the USS Gerald R. Ford strike group inbound, Poland’s PM has urged citizens to leave Iran “immediately.