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A Syrian man rests in a hospital in Reyhanli, Turkey, Friday, April 7, 2017. Turkish media, quoting Turkey's Justice Minister Beki Dozens of members of a Turkish trade union pray for victims, in protest of this week's chemical weapons attack that killed more th Turkey's President Recep Tayyip Erdogan addresses his supporters in Balikesir, Turkey, Thursday, April 6, 2017. Turkey is heading Dozens of members of a Turkish trade union carry black-painted coffins with images of the attack's child victims, in protest of th Dozens of members of a Turkish trade union carry black-painted coffins with images of the attack's child victims in protest of thi A Syrian woman rests in a hospital in Reyhanli, Turkey, Friday, April 7, 2017. Turkish media, quoting Turkey's Justice Minister Be Turkey's President Recep Tayyip Erdogan gestures as he addresses his supporters in Balikesir, Turkey, Thursday, April 6, 2017. Tur FILE - In this Feb. 10, 2017 file photo released by the Syrian official news agency SANA, Syrian President Bashar Assad speaks dur In this image provided by the U.S. Navy, the guided-missile destroyer USS Porter (DDG 78) launches a tomahawk land attack missile In this image provided by the U.S. Navy, the guided-missile destroyer USS Porter (DDG 78) launches a tomahawk land attack missile In this image provided by the U.S. Navy, the guided-missile destroyer USS Porter (DDG 78) launches a tomahawk land attack missile This Oct. 7, 2016 satellite image released by the U.S. Department of Defense shows Shayrat air base in Syria. The United States bl In this image provided by the U.S. Navy, the guided-missile destroyer USS Porter (DDG 78) launches a tomahawk land attack missile This frame grab from video provided by the Syrian official TV, a Syrian government channel that is consistent with independent AP In this image provided by the U.S. Navy, the guided-missile destroyer USS Porter (DDG 78) launches a tomahawk land attack missile