Nuclear proliferation: The spread or increase in the number of countries possessing nuclear weapons or utilizing nuclear energy for non-peaceful purposes.
Blockade runner: A ship that attempts to bypass or break through a naval blockade without being caught by enemy forces.
Dรฉtente: A period characterized by a relaxation of tensions between rival nations, often referring specifically to an easing of Cold War tensions between the U.S. and Soviet Union during the 1970s.