Fourth Taiwan Strait Crisis

The Fourth Taiwan Strait Crisis refers to the sharp escalation of military and diplomatic tensions around Taiwan in August 2022, triggered by U.S. House Speaker Nancy Pelosi's visit to Taipei on 2–3 August 2022. In response, the People's Republic of China (PRC) announced unprecedented live-fire military exercises in six zones encircling Taiwan, some of which overlapped with Taiwan's claimed territorial waters and crossed the median line of the Taiwan Strait.

Key features of the crisis included:

• Ballistic missile launches by the People's Liberation Army Rocket Force over Taiwan for the first time, with several missiles reportedly landing in Japan's exclusive economic zone near the Sakishima Islands.
• Naval and air incursions across the Taiwan Strait median line, an informal boundary the PRC subsequently declared it no longer recognized.
• Suspension of bilateral channels with the United States by Beijing, including military-to-military dialogues, climate cooperation talks, and counter-narcotics coordination.
• Diplomatic protests through summoning of the U.S. ambassador and sanctions on Pelosi and her immediate family.

The episode is termed the "Fourth" crisis in sequence with the First (1954–55) and Second (1958) Strait crises over Kinmen and Matsu during the early Cold War, and the Third (1995–96), when the PRC conducted missile tests around Taiwan in response to President Lee Teng-hui's visit to Cornell University and ahead of Taiwan's first direct presidential election.

Analysts at institutions including CSIS, RAND, and the Lowy Institute have argued the 2022 crisis marked a structural shift: PRC exercises that previously were episodic became a "new normal" of regular large-scale drills, including the Joint Sword exercises in April 2023 and April 2024 following meetings between Taiwanese presidents and U.S. officials, and following the May 2024 inauguration of President Lai Ching-te. The crisis is frequently cited in debates over deterrence, strategic ambiguity, and the credibility of the Taiwan Relations Act (1979).