Leaders of South Korea, Japan and China reaffirmed Monday that maintaining peace, stability and prosperity on the Korean Peninsula serves their common interest and is their responsibility, amid continued provocations from North Korea that have undermined regional peace in Northeast Asia. In the first trilateral summit in 4 1/2 years hosted in Seoul, the three countries represented by President Yoon Suk Yeol, Japanese Prime Minister Fumio Kishida and Chinese Premier Li Qiang reiterated their stan