BEIRUT/DAMASCUS (Reuters) - Islamic State militants published photos on Tuesday purporting to show the destruction of a Roman-era temple in the ancient Syrian city of Palmyra, an act the U.N. cultural agency UNESCO has called a war crime. Syria's antiquities chief Maamoun Abdulkarim told Reuters the images did appear to show the destruction of the ancient Baal Shamin temple and correlated with descriptions given by residents of the explosion detonated there on Sunday. Five photos were distributed on social media showing explosives being carried inside, being planted around the walls of the temple, a large blast and then rubble.