Should the United States put nuclear warheads on hypersonic missiles? For 20 years, Washington has answered “no” by excluding nuclear weapons from its prompt strike and hypersonic weapons programs. In order to close gaps in U.S. theater deterrence and assurance capabilities, it is time to consider a change of course. …

China started a military exercise near the Taiwan Strait on Friday, in a new warning to the United States and pro-independence forces in Taiwan to coincide with a visit to the self-ruled island of a senior US diplomat.

A top Air Force leader in the Pacific refused to confirm or deny recent reports that a U.S. aircraft disguised itself as a Malaysian plane, allegedly “spoofing” a transponder signal to spy on Chinese military activities. But he said the U.S. didn’t break any rules.