Iran, its partners in Iraq, and the Iraqi government falsely claimed that the strikes were violations of Iraqi sovereignty.[12] Western media outlets reported that Iranian-backed Iraqi militia Kataib Hezbollah launched the attack from Rutba, Anbar province, western Iraq.[13] The United States has the right to respond and defend itself against these attacks from Iranian-backed groups in Iraq. Iranian-backed groups in Iraq are themselves violating Iraqi sovereignty by launching attacks from Iraqi territory targeting US forces in Iraq at the invitation of the Iraqi government and American assets elsewhere in the region.
https://www.understandingwar.org/backgrounder/iran-update-february-3-2024
Iran Update, February 4, 2024
IRGC-controlled media claimed on February 3 that the Islamic Resistance in Iraq—a coalition of Iranian backed Iraqi militias—conducted two rocket attacks targeting US forces at Conoco Mission Support Site in northeastern Syria.[33] CTP-ISW cannot verify these claims. The Islamic Resistance in Iraq did not claim responsibility for either of the attacks on its Telegram account.
https://www.understandingwar.org/backgrounder/iran-update-february-4-2024