President Barack Obama is set on visiting Japan, South Korea, Malaysia, and the Philippines after previously cancelling his trip in 2013.
In golf, 19-year-old Yuka Saso of the Philippines wins this year's championship at the Olympic Club in San Francisco, California, after coming back from two double-bogeys to beat Japan's Nasa Hataoka in the third hole of a sudden death playoff. Saso is the first Filipino player to win a major golf championship and equals South Korea's Inbee Park as the youngest champion of the U.S. Women's Open.
South Korea decides against extending the General Security of Military Information Agreement (GSOMIA). South Korean officials express that the exclusion from Japan's preferred trade list on 12 August eliminated any benefit to maintaining the agreement.
United States President Barack Obama hosts a two-day summit in Rancho Mirage, California with leaders of the ASEAN member states, including democratically-elected Benigno Aquino III of the Philippines and Joko Widodo of Indonesia as well as autocratic rulers such as Hun Sen of Cambodia and Najib Razak of Malaysia.
The Philippines asks the International Court of Arbitration at The Hague to invalidate China's claims to virtually all of the South China Sea. The hearing was attended by observers from Indonesia, Japan, Malaysia, Thailand, and Vietnam.
South Korea and Japan temporarily halt some military cooperation programs in a long-running dispute over control of the Liancourt Rocks. South Korea's first fleet plans a "biannual" drill around the area from September 7 to 11.