The message was conveyed in an email from Ambassador Mike Huckabee that was sent to the U.S. mission Friday and seen by NBC News.

Some U.S. embassy staff in Israel have been told to leave the country quickly in a message which will be seen as another sign of a possible American attack on Iran as threatened by President Donald Trump.

President Trump said Friday that he is "not happy" with the pace of progress in negotiations with Iran over its nuclear program, as tensions continue to ratchet up amid the administration's deployment of military assets to the Middle East.

The unrest underlines the intensity of domestic discontent, even as Tehran’s government grapples with the threat of U.S. strikes. Here’s what to know.

The State Department cautioned that sudden travel restrictions, rocket alerts, and flight disruptions are possible.

As Trump leaves the threat of war on the table amid nuclear talks with Iran, the State Department urges Americans to "consider leaving Israel" while they can.

WASHINGTON, Feb 27 (Reuters) - U.S. President Donald Trump expressed disappointment ⁠on ⁠Friday about U.S. negotiations with Iran over its nuclear ⁠program and warned that "sometimes you have to use force," amid a massive military presence in the region that could ​presage strikes on the Islamic Republic.

Trump warns Iran missiles could "soon reach" U.S. as tensions escalate. Iran's current arsenal threatens American forces across Middle East Gulf bases.

A new AP-NORC poll finds that as the U.S. and Iran head into their next round of nuclear talks in Geneva, many U.S. adults continue to view Iran’s nuclear program as a threat.

Tehran has strongly dismissed recent allegations by the United States and Israel regarding its nuclear program, ballistic missiles, and casualties during January unrest. “Whatever they're alleging in regards to Iran's nuclear program,