Russia’s invasion of Ukraine has raised the specter of nuclear war, as Russian President Vladimir Putin has placed his nuclear forces at an elevated state of alert and has warned that any effort by outside parties to interfere in the war would result in “consequences you have never seen.” Such saber-rattling has understandably made headlines and drawn notice in Washington. But if China attempted to forcibly invade Taiwan and the United States came to Taipei’s aid, the threat of escalation could outstrip even the current nerve-wracking situation in Europe. Foreign Affairs