The risks to humanitarian workers in Gaza are intolerable, the United Nations said on Tuesday as it pressed Israel for more effective coordination with the aid groups, approval for the U.N. to use essential security equipment and for the Israeli military to facilitate aid deliveries. “Humanitarian operations have repeatedly been in the crosshairs in Gaza,” U.N. spokesman Stephane Dujarric told reporters on Tuesday. “The risks, frankly, are becoming increasingly intolerable.” He said the head of U.N. safety and security met on Monday with COGAT, the Israeli military branch responsible for aid t…