The US strikes Iraq over a drone attack that it says was done by troops backed by Iran.

Iraq's government says that one soldier was killed and 18 were hurt in the attack on Tuesday.

Their government says that US attacks on Iran-backed forces in Iraq have killed one Iraqi soldier and hurt at least 18 others.

The strikes began early Tuesday and went after three sites used by Kataeb Hezbollah and groups connected to it, according to Adrienne Watson, a spokeswoman for the US National Security Council. 

According to US Defense Secretary Lloyd Austin, they were in reaction to an attack on Erbil Air Base by Kataeb Hezbollah the day before that hurt three US service members, one of them critically.

Austin said the strikes were "necessary and proportionate" and were meant to "disrupt and degrade" the abilities of the Iran-backed groups that attacked US troops.

Tuesday, Iraq's government spoke out against the US strikes, calling them "hostile acts" that violate Iraqi territory.

A statement from the Iraqi prime ministry, found by Iraq's state news agency, said that the strikes "harm bilateral relations between the two countries."

Since the Israel-Hamas war started on October 7, US forces have repeatedly attacked sites used by Iran and its proxies in Iraq and Syria. This is in reaction to the dozens of attacks on US and allied forces in the area.

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