today -. The US expanded its relations with Japan and South Korea during the G20 foreign ministers' meetings. Secretary of State Marco Rubio, Japanese Foreign Minister Toshimitsu Motegi and South Korean Foreign Minister Cho Hyun signed a memorandum of cooperation to establish the Tripartite Arctic Pacific Partnership (TAPP): the working group will explore maritime safety, emergency response and economic opportunities in the Pacific Arctic. Potential areas include Arctic shipping, shipbuilding technology and energy resources.