Iraq’s New Premier Pledges Militia Crackdown as U.S. Arrests Kata’ib Hezbollah Commander

Ali al-Zaidi was sworn in as Iraq's prime minister on May 14, 2026, taking office against a backdrop of direct U.S. pressure and a parallel Justice Department counterterrorism action that illustrated precisely why Washington wants his cooperation. Al-Zaidi assumed office with only a partial cabinet after lawmakers failed to reach consensus on key posts, including the interior and defense ministries, both of which remain unfilled. Under Iraq's constitutional framework, a government wins a confidence vote when parliament approves half-plus-one of its ministries, a threshold al-Zaidi cleared despite the incomplete lineup.

Iraqi lawmakers approved a new government led by al-Zaidi after months of deadlock and mounting pressure from the United States. Al-Zaidi emerged as the consensus candidate after persistent gridlock within the Coordination Framework following the November 2025 elections, and he has no previous political or government experience, a first for the office. The path to his nomination was shaped in large part by U.S. intervention. The Coordination Framework had previously backed former Prime Minister Nouri al-Maliki but withdrew his candidacy after President Donald Trump threatened to withhold Iraq's access to the petrodollar over al-Maliki's pro-Iran ties. Washington suspended cash payments from Iraq's oil revenues, which are held at the Federal Reserve Bank of New York, and also halted security assistance and suspended cooperation with Iraqi security agencies. The Trump administration suspended close to $500 million in U.S. dollar shipments to Iraq in an attempt to compel Baghdad to dismantle Iran-backed armed groups, per reporting by The Wall Street Journal. In his inaugural address, al-Zaidi pledged that the state would hold a monopoly on the use of force, according to POLITICO.

The same week al-Zaidi took office, the Justice Department moved on a related front. The department announced the arrest of Mohammad Baqer Saad Dawood al-Saadi, an Iraqi national and senior member of Kata'ib Hizballah, a U.S.-designated foreign terrorist organization. According to a complaint unsealed in Manhattan federal court, al-Saadi worked closely with Iran's Islamic Revolutionary Guard Corps to coordinate at least 18 terrorist attacks and attempted attacks in Europe and two in Canada since March 2026. Al-Saadi and his associates planned, coordinated, and claimed responsibility for the attacks under the name Harakat Ashab al-Yamin al-Islamiya, a component of Kata'ib Hizballah. The plot extended to U.S. soil. Federal authorities say al-Saadi planned to attack a New York City synagogue and two Jewish centers in Los Angeles and Scottsdale, Arizona. He was apprehended in Turkey and transferred into FBI custody after sending a cryptocurrency down payment to an undercover law enforcement officer. Al-Saadi faces charges including conspiracy to provide material support to a foreign terrorist organization and conspiracy to bomb a place of public use. He appeared in the Southern District of New York, where he was ordered held without bail. His defense attorney, Andrew Dalack, claimed al-Saadi is a "political prisoner," per court reporting by Al Jazeera and CNN.

Washington has framed al-Zaidi's government as both a diplomatic opportunity and a test case. Trump spoke by phone with al-Zaidi on April 30, congratulating him on his nomination. The call included an invitation to the White House, signaling U.S. support for the Iraqi prime minister-designate. Tom Barrack, the U.S. ambassador to Turkey who also leads the Iraq portfolio, congratulated al-Zaidi on forming a government, with Barrack stating that President Trump, Secretary of State Marco Rubio, and the United States stand ready to work with the new government to advance "prosperity for the Iraqi people and the elimination of terrorism." The administration has also deployed coercive tools alongside the diplomatic outreach. The U.S. Treasury Department sanctioned Iraqi militia commanders while the Rewards for Justice program issued rewards of up to $10 million each for information on Iraqi militia leaders. State Department spokesperson Tommy Pigott stated publicly that the United States will not tolerate attacks on U.S. interests and expects the Iraqi government to immediately take all measures to dismantle Iran-aligned militia groups in Iraq.

The structural obstacles al-Zaidi faces are significant. Since the outbreak of the U.S.-Israeli war against Iran in late February, U.S. facilities in Iraq have weathered over 600 attacks. Kata'ib Hizballah joined other Shiite groups in the Popular Mobilization Forces, a coalition that now exists under nominal supervision of Iraq's national security forces but fights with significant independence. The Popular Mobilization Forces were established in 2014 to combat the Islamic State and number around 238,000. Unwinding that apparatus is a different order of challenge than pledging to do so. Within the Coordination Framework, the view is that the prime minister should function as an implementer of Framework policy rather than an independent actor, a structural constraint that limits al-Zaidi's room to maneuver against the very forces that backed his selection. Analysts note that militia groups have deeply entrenched themselves in the Iraqi state and the economic system, and that regardless of who the prime minister is, chipping away at those groups will be a challenging and lengthy process, according to Victoria Taylor, former State Department deputy assistant secretary for Iraq and Iran, now at the Atlantic Council. Norman Roule, a former senior U.S. intelligence official with more than three decades focused on Middle East issues, told POLITICO that Washington will seek to convert diplomatic gestures and financial support into leverage to build a political and security architecture that limits Iranian influence, while holding Baghdad accountable for militia conduct. The Renad Mansour-led Iraq Initiative at Chatham House has assessed, according to POLITICO, that the more likely outcome is that the militias continue to function as part of the Iraqi state rather than being genuinely dismantled.

The al-Saadi arrest and the al-Zaidi inauguration together define the parameters of the U.S. position: engagement through diplomacy, accountability through law enforcement and sanctions, and an explicit demand for action that Baghdad's new government has acknowledged but has not yet demonstrated the capacity to deliver. The U.S. expects its new bilateral security agreement with Iraq, still under negotiation, to retain long-term counterterrorism cooperation and strengthen Iraqi sovereignty against Iran and non-state armed groups. How Washington sequences incentives and penalties in the months ahead will determine whether al-Zaidi's monopoly-of-force pledge becomes policy or remains rhetoric.