Key keywords: US military strikes on Iran, Iran-backed militias, Middle East regional tensions, Biden administration military action, Syria-Iraq cross-border strikes, Iranian Revolutionary Guard Corps, US base Jordan attack, regional security stability The Biden administration authorized a large-scale wave of targeted military strikes on February 2, 2024, targeting sites linked to Iran’s Islamic Revolutionary Guard Corps (IRGC) and its affiliated Shia militia groups across eastern Syria and northern Iraq, marking the most significant US military response to the deadly January 28 drone attack on a US outpost in Jordan that killed three American service members and injured more than 40 others. US Central Command confirmed that the strikes hit more than 85 separate targets, including militia command and control centers, weapons storage facilities, drone and rocket launch sites, and logistics supply hubs, with multiple rounds of air strikes carried out by US fighter jets and long-range bombers operating from bases outside the region. Senior Pentagon officials stated in a press briefing that the strikes were carefully calibrated to minimize civilian casualties, and were designed both to retaliate for the Jordan attack and to degrade the ability of Iran-backed groups to carry out future attacks on US personnel and assets across the Middle East. Iran’s foreign ministry immediately condemned the strikes as a blatant violation of Syrian and Iraqi national sovereignty, and warned that the US would face “firm and equal” retaliation for what it called an act of aggression. The Iraqi federal government also issued a sharp rebuke, stating that the strikes were carried out without prior coordination with Iraqi authorities, and that they would undermine ongoing efforts to de-escalate tensions in the region, summoning the US chargé d’affaires in Baghdad to protest the action. Regional powers including Saudi Arabia, the United Arab Emirates, and Lebanon have all issued calls for maximum restraint, warning that further escalation could drag the entire region into a widespread, uncontrolled conflict that would devastate civilian populations and disrupt global energy supplies. In the US, the strikes have drawn mixed reactions on Capitol Hill: Republican lawmakers have criticized the Biden administration for delaying the response and for carrying out strikes that they argue are too limited to deter Iran, while some progressive Democratic lawmakers have raised concerns that the strikes could drag the US into another open-ended war in the Middle East without proper congressional authorization. As of press time, the Pentagon has not ruled out additional military action if Iran or its proxy groups continue to target US interests in the region.