The $1.2 billion renovation of the Palais des Nations was intended to reaffirm Geneva's centrality to the multilateral system. Instead, the city’s international quarter is emptying. The World Health Organization (WHO) has cut hundreds of positions. The U.N. Children’s Fund (UNICEF) is relocating core administrative roles to Rome and Budapest. Other agencies are scaling back or relocating operations. The United States, which funds roughly a quart…