The Chinese aircraft carrier Liaoning sailed through the Taiwan Strait on Monday, April 20, according to Taiwan’s defence ministry — marking the first passage of a carrier through the waterway since late last year.

The transit is a deliberate signal. The strait, roughly 180 kilometers wide at its narrowest, is one of the most politically loaded stretches of water in the world. Beijing claims it as internal waters; Washington and Taipei reject that framing and maintain freedom-of-navigation as a standing principle. Sending a carrier through it is not a routine patrol — it is a message, timed and calculated.