As one of the four peacekeepers wounded in this week's Serb attack succumbed to his wounds today, NATO officials lashed out at the U.N. for standing in the way of retaliating. NATO Secretary General Willy Claes, after a meeting with U.S. Defense Secretary William Perry in Brussels, angrily denied that NATO had failed to respond to the deliberate attack on U.N. soldiers with air attacks. "Sorry -- there's never been one request (for air strikes). We are ready, as always," Claes told reporters. A U.N.-NATO agreement permits military action only after the "dual key" of both organizations is applied. NATO has been primed and ready for action for months, but the U.N. has restrained its hand, eager to stick with its neutral peacekeeping role.Post your opinion on theInternationalbulletin board.