(Reuters) – China does not feel threatened by countries in Southeast Asia and is optimistic about the situation in the disputed South China Sea, the Foreign Ministry said, warningJapan not to “spread rumors” it plans a new air defense identification zone. China alarmed Japan, South Korea and the United States last year when it announced an air defense identification zone for the East China Sea, covering a group of uninhabited islands at the center of a bitter ownership spat between China and […]