What signal is China sending with first official footage of sixth-generation fighter?

China’s military apparently released the first official footage of its sixth-generation fighter over the weekend – a move that analysts said might suggest Beijing was ahead of its competitors, including the US, in developing the next generation of warplanes. China Military Bugle, the official press account of the People’s Liberation Army, published a four-minute video on Sunday marking the 10th anniversary of China’s first heavy transport aircraft, the Y-20, entering service.

In the video’s...