xiāng​hù​bǎo​zhèng​huǐ​miè

mutual assured destruction

  1. mutual
    mutual; involving two or more people or things; used to describe a relationship or feeling between parties
  2. to guarantee
    to guarantee, ensure, or pledge to take responsibility for the completion or quality of something
  3. to destroy
    to destroy, ruin, or exterminate completely; to cause something to cease to exist