US soldiers patrol the Taji base complex, which hosts Iraqi and US troops north of the capital Baghdad. File photo

The US military thwarted an attack targeting its forces in Iraq early on Wednesday, intercepting two drones before they could strike, two US officials told the media.

The officials, who spoke on condition of anonymity, declined to say who was suspected of the attack but it came as Washington is on heightened alert for activity by Iran-backed groups amid soaring tension in the region over the Israel-Hamas war.

The one-way attack drones were intercepted as they attempted to strike Iraq's al Asad air base, which hosts American troops, the officials said.

The incident came hours after a strike on a Gaza hospital killed hundreds of Palestinians, raising the stakes for US President Joe Biden as he flies to Israel on Wednesday to signal support for its war against Hamas.

Palestinian officials said an Israeli air strike hit the hospital, with the Palestinian Authority's health minister accusing Israel of causing a "massacre".

In Iraq, tension over the war in Gaza had already been high. Its top Shi'ite cleric, Grand Ayatollah Ali Al Sistani, last week condemned Israel and called on the world to stand up to the "terrible brutality" in Gaza.

Reuters