The move, the first time the U.S. has attacked Iran, is a major escalation of the conflict between Israel and Iran. U.S. involvement has divided Republicans, including Trump's closest allies.

President Donald Trump announced Saturday evening that US military forces had dropped bombs on three Iranian nuclear facilities, ending a weeklong deliberation period over joining Israel’s campaign against Tehran and thrusting the United States squarely into an escalating Middle East conflict.

The U.S. reached out to Iran diplomatically to say the strikes are all the U.S. plans and that regime change efforts are not planned, sources said.