If the Houthis' claims are confirmed, this will have been the second time the group has shot down an American drone since the Oct. 7 Hamas attack on Israel, and Israel's response, plunged the region into crisis. The downing of a Reaper drone, the mainstay of the American military's aerial surveillance fleet, is another escalation of violence between the United States and Iran-backed groups in Yemen, Iraq and Syria. The episodes have intensified over the past two months, underscoring the risk that the conflict between Israel and Hamas could spiral into a wider war. The United States struck five Houthi military targets, including an undersea drone, in Houthi-controlled areas of Yemen on Saturday, according to a statement from the military's Central Command. The use of the underwater drone is believed to have been the first time that the Houthis have employed such a weapon since they began their campaign against ships in the Red Sea and the Gulf of Aden on Oct. 23, the statement said.

DUBAI (Reuters) - Yemen's Iranian-aligned Houthi movement said on Thursday it had attacked Abu Dhabi airport in the United Arab Emirates with a drone, though it was not immediately clear if there was any damage or casualties.