Impressed by the success of this strategy, the Soviet Union and other Warsaw Pact nations undertook drug smuggling, including to National Atlantic Treaty Organization troops and U.S. troops in Vietnam, during the 1960's and 1970's. Similarly, the Sandanista Government has adopted trafficking as a means to weaken U.S. society and abet communist insurgencies in Latin America; Columbian drug traffickers use their vast wealth to train and arm communist guerillas and foment revolution. Narcoterrorism also is a threat in Pakistan, Burma, Malaysia, Thailand, and Turkey; terrorist groups in Syria and Northern Ireland also have been connected with drug trafficking. Countermeasures should aim at curtailing both supply and demand, public education, diplomatic sanctions, and providing support to other countries targeted by narcoterrorists.