Since 1935, Japanese leaders had declared the country's intention to establish "a new order in Asia". China wanted to replace Chiang Kai-shek, and Western interests wanted the Soviets to retreat west of Lake Baikal. The Japanese government and the military proposed the Greater East Asia Co-Prosperity Sphere. Despite efforts to "put ... the aggressor in quarantine" (as Franklin D. Roosevelt said in Chicago in October 1937), the "USS Panay" (an American river-patrol boat) was deliberately sunk by Japanese Navy dive bombers in the Yangtze River (1938).