The U.S. Embassy in Qatar warned American citizens to "shelter in place until further notice," as Iran vows to hit back against the U.S. for its strikes on nuclear facilities. The embassy said in its June 23 alert that it was acting "out of an abundance of caution" but gave no other details.

"Out of an abundance of caution we recommend American citizens shelter in place until further notice," the U.S. Embassy in Doha, Qatar said.

The United States Embassy in Qatar has issued a warning to Americans to “shelter in place” as tensions in the region continue to escalate. “Out of an abundance of caution, we recommend American citizens shelter in place until further notice,