Last night, 25 armed, masked men set fire to a U.N. summer camp at a beach in Nuseirat, Gaza, destroying inflatable pools and tents and roughing up a group of guards protecting the facility. It was the second attack on a U.N. recreation facility in just over a month. On May 23, a group of 30 masked, armed men set fire to another U.N. summer camp facility under construction in Gaza City. They also threatened to kill the U.N.'s top relief official in Gaza.