NEW YORK Yemen's President Ali Abdullah Saleh, who was injured in an attack on his presidential palace last week, has burns over 40 percent of his body that will take a long time to heal, The New York Times reporte3d Tuesday. In a dispatch from Riyadh, the newspaper, citing Yemeni officials and western diplomats, said initial reports said that Saleh, who is in the Armed Forces Hospital in Riyadh, had suffered burns on his face, neck and arms when a blast struck at the palace mosque during prayers. But the burns also covered some of his back as well, according to the sources, speaking on condition of anonymity. His face was quite charred, a Western official, speaking anonymously according to governmental rules, was quoted as saying. The burns are serious; he is not as well as his aides are portraying it.