The leaders of the United States, South Korea and Japan on Wednesday expressed deep concern over North Korea's missile tests and said they would cooperate more closely to address the threat posed by Pyongyang.
U.S. President Joe Biden, Japanese Prime Minister Fumio Kishida and South Korean President Yoon Suk-yeol met on the sidelines of the NATO summit in Madrid and agreed that the progress of North Korea's nuclear and missile programmes posed serious threats to not only the Korean peninsula but also East Asia and the world.
