The standoff between the police and Hezbollah Brigades may portend an upcoming power struggle between Iraq’s established security forces (the Army, National Police, and local police) and the Iranian-supported Shia militias that make up the Popular Mobilization Units (PMU). The PMU has risen in stature after leading the charge to defeat the Islamic State in many Iraqi cities, and its political party placed second in Iraq’s parliamentary elections. It will ally with anti-American cleric Muqtada al Sadr, whose party placed first in the elections, to form the next government.
— Read on www.longwarjournal.org/archives/2018/06/iraqi-police-hezbollah-brigades-clash-in-baghdad.php