Speaker of the House Nancy Pelosi and five other House Representatives landed in Taiwan on Tuesday evening as part of a tour of Asian democracies, details of which were leaked to the Financial Times in mid-July. Pelosi’s itinerary includes The Chinese government perhaps gave a foretaste of how it would respond if Ms. Pelosi visits when the military announced live-fire exercises in waters 80 miles from neighboring Taiwan’s coast. On Monday, the 95th anniversary of the founding of the People’s Liberation Army, Chinese military media unleashed more statements about defending sovereignty, as well as video of China’s Dongfeng-17 ballistic missile....