UPDATE:

Iran launched an attack on the United States' Qatar air base on Monday (June 23), state television network IRIB initially reported, according to NBC News. Majed bin Mohammed al-Ansari, Qatar's foreign affairs spokesperson, confirmed that the attack took place but resulted in zero casualties, adding that the country had the right to respond "directly in a manner proportional to the nature and scale of this blatant aggression and in accordance with international law" on his X account.

"We also affirm that the continuation of such escalating military actions will undermine security and stability in the region and drag it into situations that will have disastrous repercussions for international peace and security," he wrote.

Operation Besharat al-Fath reportedly targeted Al Udeid Air Base, the United States' largest in the Middle East, following reports that the military was preparing for an "imminent" threat of a potential Iranian retaliation strike.

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The United States military is reportedly preparing for an "imminent" threat of a potential Iranian retaliation strike on its Qatar airbase, sources with knowledge of the situation confirmed to FOX News on Monday (June 23).

Significant intelligence warnings were issued for Al Udeid Air Base, the United States' largest in the Middle East, following attacks on three Iran nuclear sites Saturday (June 21). The military has reportedly moved much of its un-hangered aircrafts out of the base last week ahead of President Donald Trump's airstrikes and a threat of Iranian retaliation using short or medium range cruise missiles or swarming drones remains in effect, according to the sources.

The Department of Homeland Security said officials should be on the lookout for attacks led by Iran during the next three months following Operation Midnight Hammer.

“It is our duty to keep the nation safe and informed, especially during times of conflict,” said Secretary Kristi Noem in the bulletin shared on the DHS' website Sunday (June 22). “The ongoing Israel-Iran conflict brings the possibility of increased threat to the homeland in the form of possible cyberattacks, acts of violence, and antisemitic hate crimes.”

Iranian Foreign Minister Abbas Araghchi threatened retaliation against the United States, claiming massive strikes on three of its nuclear sites would result in "everlasting consequences."