Diplomats from three countries said they ‘shared their concerns’ about Pyongyang’s nuclear and ballistic missile programmes

The United States, Japan and South Korea have promised “concerted trilateral cooperation” towards the denuclearisation of North Korea.

Jake Sullivan, President Joe Biden’s national security adviser, held a rare in-person meeting with his counterparts from South Korea and Japan, Suh Hoon and Shigeru Kitamura, at the US Naval Academy in Annapolis, Maryland.

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