It is necessary for Japan, the United States, Australia and the Philippines to conclude a "collective defense pact" to contain China and ensure regional peace and stability, Ely Ratner says. https://www.japantimes.co.jp/news/2025/12/14/japan/politics/ratner-collective-defense-pact-indo-pacific/?utm_medium=Social&utm_source=mastodon #japan #politics #elyratner #defense #constitution #indopacific #us #china