A man walks past a huge election poster in Baghdad promoting Iraqi Prime Minister Nouri al-Maliki (center) and his political allies. Maliki has ruled for eight years and is seeking another four years. Ahmad Al-Rubaye/AFP/Getty Images hide caption

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A Syrian woman cries as she leaves a residential block in Aleppo, Syria, reportedly hit by an explosives-filled barrel dropped by a government forces helicopter on March 18. Khaled Khatib/AFP/Getty Images hide caption

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Syrian President Bashar Assad (right) visits the Christian village of Maaloula, near Damascus on Sunday. Assad's forces have been gaining the upper hand in the fighting, and the CIA is now increasing training and aid to Syrian rebels. AP hide caption

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Rebel fighters inspect the wreckage of a Syrian army helicopter after the Islamic State of Iraq and Syria, or ISIS, allegedly destroyed it in March in the northern Syrian city of Aleppo. Mohammed Al-Khatieb/AFP/Getty Images hide caption

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Iraqi Sunni masked protesters burn tires to block the main highway to Jordan and Syria, outside Fallujah, Iraq, on Dec. 30. Violence has returned to Iraq's Anbar province, with discontented ordinary Sunnis joining forces with al-Qaida-linked militants battling the Iraqi government. AP hide caption

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Iraqi Shiite mourners carry the coffin of a soldier killed in clashes with anti-government fighters in Fallujah earlier this month. The government faces a months-long crisis in Anbar province, where it has lost the city of Fallujah as well as shifting parts of provincial capital Ramadi to anti-government militants. AFP/AFP/Getty Images hide caption

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