Argentinean President Nestor Kirchner chats with Chinese President Hu Jintao at the 2005 World Summit in New York. Argentinean President Nestor Kirchner (R) chats with Chinese President Hu Jintao, at the 2005 World Summit and 60th General Assembly of the United Nations in New York, September 14, 2005. World leaders are exploring ways to revitalize the United Nations at a summit on Wednesday but their blueprint falls short of Secretary-General Kofi Annan's vision of freedom from want, persecution and war. Man at center is unidentified. REUTERS/Rick Wilking