This issue of Asia Policy features a roundtable on pathways for trilateral cooperation between the United States, South Korea, and Japan; an essay on South Korea’s trade strategy in a time of preferential trade agreements and intensifying U.S.-China techno-rivalry; articles on Asian powers’ reactions to the Israel-Hamas war and on the origins and shifting of the norms around Japanese arms exports; and a roundtable on Enze Han’s The Ripple Effect: China’s Complex Presence in Southeast Asia that discusses how China–Southeast Asia relations are taking shape in both intended and unintended ways.