Some fear Abu Ghraib has all the makings for a takeover — it's majority-Sunni population long at odds with the Shiite-led central government over issues like discrimination, political exclusion and claims of widespread arrests and prosecution — some of the very issues that prompted many Iraqis in the country's north and west to embrace this radical alternative. In 2004, the revelation that American soldiers had tortured detainees at the prison, formally known as Baghdad Central Prison, thrust Abu Ghraib into the limelight and would later become the scene of brutal insurgent attacks. The serenity belies mounting tensions across this region as the Islamic State group continues to make gains against an embattled Iraqi military — despite the air campaign launched by the U.S.