Izzat Ibrahim al-Douri, a former member of Saddam Hussein's inner circle (shown here in 2002), leads one of the Sunni armed factions helping ISIS in its fight against the Iraqi government. Jassim Mohammed/AP hide caption

itoggle caption Jassim Mohammed/AP

Former President George W. Bush (right) and his father, former President George H.W. Bush, wave as they leave a family wedding in Washington, D.C., in May 2006. Normand Blouin-Pool/Getty Images hide caption

itoggle caption Normand Blouin-Pool/Getty Images