Shashi Tharoor (left), Under-Secretary-General for Communications and Public Information, speaks at the official opening of the 60th Anniversary of the United Nations, today at UN Headquarters. Behind him are Jan Eliasson (left), President of the General Assembly, and Secretary-General Kofi Annan (centre). The United Nations today celebrated its 60th birthday with wreath laying for fallen colleagues, the ringing of the Harmony Bell and appeals to rise to the new challenges that lie ahead.