New announcements on deeper military cooperation between the U.S. and Japan — paired with Tokyo's drive to strengthen its own defense capabilities — confirm that the officially pacifist nation is a growing military power in East Asia. The moves could also give the U.S. new tools to defend against a potential invasion of Taiwan.
Why it matters: Japan was already arguably America's most powerful ally in Asia. Now spurred on by Russia's invasion of Ukraine, unprecedented missile launches from North Korea, and Chinese aggression toward Taiwan, Japan is doubling down on the U.S. alliance and plans to double its own defense spending by 2027.