** FILE ** In this June 14, 2012, file photo, U.N. observers inspect the prayer hall of the Sayyida Zeinab shrine, which was damaged after a car bomb exploded near the shrine, in a suburb of Damascus, Syria. Iraqi Shiites increasingly fear the Muslim sect and its holy sites could be targeted in Syria, and Iranian-linked militants loyal to the faction are girding for a new eruption of retaliatory sectarian fighting, according to Iraqi Shiite leaders and government officials. (AP Photo/Bassem Tellawi, File)

Photo by: Bassem Tellawi

** FILE ** In this June 14, 2012, file photo, U.N. observers inspect the prayer hall of the Sayyida Zeinab shrine, which was damaged after a car bomb exploded near the shrine, in a suburb of Damascus, Syria. Iraqi Shiites increasingly fear the Muslim sect and its holy sites could be targeted in Syria, and Iranian-linked militants loyal to the faction are girding for a new eruption of retaliatory sectarian fighting, according to Iraqi Shiite leaders and government officials. (AP Photo/Bassem Tellawi, File)