Iraqi security forces monitor traffic Wednesday in the Karradah district of Iraq's capital Baghdad as heavy security measures were imposed following bombings this week. Ahmad Al-Rubaye/AFP/Getty Images hide caption

itoggle caption Ahmad Al-Rubaye/AFP/Getty Images

Vice President Joe Biden (right) concludes a meeting with Iraqi Vice President Adil Abd al-Mahdi on Jan. 14 in the Roosevelt Room of the White House. Tim Sloan/AFP via Getty Images hide caption

itoggle caption Tim Sloan/AFP via Getty Images

Debris litters the road after two bombings in the western city of Ramadi, about 60 miles from Baghdad, on Dec. 30. Violence has escalated recently in Anbar province, once the stronghold of al-Qaida in Iraq. Azhar Shallal/AFP/Getty Images hide caption

itoggle caption Azhar Shallal/AFP/Getty Images