State Sponsors of Terrorism
However, in 1940, the United States participated in the ABCD line against Japan, and the Helium Act of 1925 forbade export of that strategic commodity. Interest in the trade as a tool of foreign policy expanded during the Cold War era, and many economic sanctions were applied. The Comprehensive Anti-Apartheid Act of 1986, was only in effect for five years. Later, sanctions were additionally aimed against countries which the U.S. government listed as "State Sponsors of Terrorism".