Trust, but verify Trust, but verify Trust, but verify (; "Doveryat, no proverit") is a Russian proverb. The phrase became well known in English when used by President Ronald Reagan on multiple occasions in the context of nuclear disarmament. Suzanne Massie, an American writer, met with President Ronald Reagan many times between 1984 and 1987. She taught him the Russian proverb "Doveryai, no proveryai" (; "Trust, but verify"), advising him that "The Russians like to talk in proverbs. It would be nice of you to know a few. You are an actor – you can learn them very quickly." The proverb was adopted
Origins of the Cold War occurred. Western Allies conducted meetings in Italy in March 1945 with German representatives to forestall a takeover by Italian communist resistance forces in northern Italy and to hinder the potential there for post-war influence of the civilian communist party. The affair caused a major rift between Stalin and Churchill, and in a letter to Roosevelt on 3 April Stalin complained that the secret negotiations did not serve to "preserve and promote trust between our countries." Relations further deteriorated when, in January 1948, the U.S. State Department also published a collection of documents titled "Nazi–Soviet Relations, 1939–1941: Documents from the Archives