Fireworks burst in the sky during the evening fireworks to celebrate North Korean founder and 'Great Leader' Kim Il-sung's birthday around the Tower of the Juche Idea (C) in the North Korean capital of Pyongyang April 14, 2009, in this picture released by the North's official news agency KCNA on April 15, 2009. An angry North Korea on Tuesday lashed out at a U.N. rebuke over its launching of a long-range rocket 10 days ago, saying it was an infringement on its sovereignty that left it no choice but to walk away from a six-country disarmament-for-aid deal.