The debate over nuclear-powered submarines is likely to serve as a critical indicator of Japan’s strategic trajectory.

Japan—a key United States ally near Russia, China and North Korea—may consider developing nuclear-powered submarines amid threats posed by regional adversaries. Newsweek has contacted the Russian and ...

The Japan Maritime Self-Defense Force said it is building up defense capabilities to enhance deterrence and response.

Rear Adm. Joey Tynch, commander, Logistics Group Western Pacific (left), and Rear Adm. Tatsuya Fukuda, commander of the Japan Maritime Self-Defense Force Escort Flotilla 4, stand on JS Kaga's bridge ...