Definition of peaceful coexistence in US English:

peaceful coexistence

noun

  • (A policy of) mutual toleration between states, groups, etc., having different beliefs, ideologies or outlooks (frequently used historical with reference to the foreign policy of the Soviet Union towards the countries of the capitalist West); also in extended use.

Origin

Mid 19th century; earliest use found in Philip Schaff (1819–1893), theologian and historian.