The People’s Liberation Army said on Friday that it had tracked and monitored a Dutch warship during its passage through the Taiwan Strait, days after using electronic interference during a confrontation with the same vessel in the South China Sea. The PLA’s Eastern Theatre Command said on social media that in less than two weeks, the shipborne helicopter of the Dutch frigate De Ruyter had “illegally intruded into the airspace over China’s Xisha [the Chinese name for the Paracel Islands] and...