It is clear that the main element of any United States policy toward the Soviet Union must be that of long-term, patient but firm and vigilant containment of Russian expansive tendencies.
George F. KennanThis is a big world. Billions - rapidly increasing billions - of people live outside our borders. Obviously, a great number of them, being much poorer than they think most of us are, look enviously over those borders and would like, if they could, to come here.
George F. Kennan