Geneva is a global city, a financial centre, and a worldwide centre for diplomacy and the most important international co-operation centre with New York because of the presence of numerous international organizations, including the headquarters of many of the agencies of the United Nations[4] and the Red Cross. It is also the place where the Geneva Conventions were signed, which chiefly concern the treatment of wartime non-combatants and prisoners of war. Geneva has been described as the third European financial centre after London and Zurich,[6] and the world's eighth most important financial centre by the Global Financial Centres Index.