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
Cold War (1947–1953) and the USSR appeared earlier. In 1945–46 the US and UK strongly protested Soviet political takeover efforts in Eastern Europe and Iran, while the hunt for Soviet spies made the tensions more visible. However historians emphasize the decisive break between the US–UK and the USSR came in 1947–48 over such issues as the Truman Doctrine, the Marshall Plan and the Berlin Blockade, followed by the formation of NATO in 1949.The Cold War took place worldwide, but it had a partially different timing outside Europe. During World War II, the Soviet Union annexed several countries as Soviet Socialist Republics within the