Geneva is the second-most-populous city in Switzerland and is the most populous city of Romandie. Situated where the Rhone exits Lake Geneva, it is the capital of the Republic and Canton of Geneva. While the municipality itself  has a population of 191,415, the canton of Geneva has 457,628 residents (as of December 2009). The agglomeration has 1,240,000 residents. Geneva is a global city, a financial centre, and a worldwide centre for diplomacy and the most important UN international co-operation centre with New York thanks to the presence of numerous international organizations, including the headquarters of many of the agencies of the United Nations 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.