French President Nicolas Sarkozy, speaking after an emergency summit of world powers in Paris, announces 'our planes are stopping attacks' on Benghazi and that France and its partner nations are determined to stop Moammar Kadafi's 'killing frenzy.' Sarkozy says the summit agreed to demand and enforce an 'immediate cease-fire' in Libya.French President Nicolas Sarkozy signaled the start of military action against Libya Saturday after an emergency summit in Paris of world powers.