US forces in Iraq and Syria have been attacked by rockets or drones four times since the US launched another round of airstrikes in eastern Syria on Wednesday, the Pentagon said on Thursday.

Sources told The Guardian that US forces were targeted in three separate attacks across Iraq on Thursday. The report described the attacks as the "most geographically widespread series of strikes on US assets in a single day since the Israel-Hamas conflict started."

The Pentagon said since October 17, US forces in the region have been attacked 46 times due to President Biden's full-throated support for Israel's campaign in Gaza. A total of 56 American troops have been injured in the attacks.