The United States carried out strikes in Iraq against three facilities linked to Iran-backed militia on Tuesday, the Pentagon said, after a weekend attack on an Iraqi air base that wounded US forces.
US troops in Iraq and Syria have been attacked about 150 times by Iran-aligned terrorists since the Israel-Gaza war started in October.
On Saturday, four US personnel suffered traumatic brain injuries after Iraq's Ain al-Asad air base was hit by multiple ballistic missiles and rockets fired by Iranian-backed terrorists from inside Iraq.
"US military forces conducted necessary and proportionate strikes on three facilities used by the Iranian-backed Kataib Hezbollah militia group and other Iran-affiliated groups in Iraq," US Defense Secretary Lloyd Austin said in a statement.
"These precision strikes are in direct response to a series of escalatory attacks against US and Coalition personnel in Iraq and Syria by Iranian-sponsored militias," Austin added.
US Central Command, which carries out operations in the Middle East, said the strikes targeted Kataib Hezbollah "headquarters, storage, and training locations for rocket, missile" and drone capabilities.
The attacks against the United States are seen as retaliation for its support of Israel in its war against Iran-backed Palestinian terrorist group Hamas. The war in Gaza has been spreading- with US forces hitting Houthi targets who have launched attacks on ships in the Red Sea.
The US has 900 troops in Syria and 2,500 in Iraq, advising and assisting local forces to prevent a resurgence of Islamic State, which in 2014 seized large parts of both countries before being defeated.
Moves to evict the US from Iraq
Iraqi Prime Minister Mohammed Shia al-Sudani's office announced moves to evict US forces following a US drone strike in Baghdad earlier this month that was condemned by the government. The Pentagon said that strike killed a militia leader responsible for recent attacks on US personnel.
Sudani has limited control over some Iran-backed factions, whose support he needed to win power a year ago and who now form a powerful bloc in his governing coalition.
The Pentagon has said it has not been formally notified of any plans to end the US troop presence in the country, and says its troops are deployed to Iraq at the invitation of the government in Baghdad.