Phillip Smyth writes: Armed men posing with severed heads, massacres of mosque-goers during Friday prayers, massive reliance on transnational jihadists — these are crimes that are usually associated with the Islamic State (IS). However, they’re also the actions of some of Iraq’s growing Shiite militia organizations, which are playing an increasingly prominent role in fighting the Sunni jihadists. These groups, many of which have deep ideological and organizational links to Iran, are sweeping away what is left of any notion of the Baghdad government’s authority — and represent a massive challenge to President Barack Obama’s stated goal of working with an inclusive Iraqi government to push back IS.

Over 50 Shiite militias are now recruiting and fighting in Iraq. These groups are actively recruiting — drawing potential soldiers away from the Iraqi army and police and bringing fighters into highly ideological, anti-American, and rabidly sectarian organizations. Many of these trainees are not simply being used to push back Sunni jihadists, but in many cases form a rear guard used to control districts that are supposedly under Baghdad’s control.

Shiite militias have embedded themselves within the structures of the Iraqi government, which has become far too reliant on their power to contemplate cracking down on them. Together, they have committed horrifying human rights abuses: In early June, Shiite militias, along with Iraqi security forces, reportedly executed around 255 prisoners, including children. An Amnesty International report from June detailed how Shiite militias regularly carried out extrajudicial summary executions, and reported that dozens of Sunni prisoners were killed in government buildings. [Continue reading…]