The US has warned citizens against travelling to Saudi Arabia, Bahrain, Iran, Iraq, Jordan, Lebanon, Kuwait, Oman, the UAE, Qatar, Syria, Yemen and Israel. All of the advisories referred to the threat of "terrorism". Washington urged people to reconsider travel to Saudi Arabia owing to threats including the "risk of drone and missile targeting of American interests by Iran and the Iranian-supported Houthis", as well as armed conflict and terrorism.