sentences:  Throughout the 1980s, the Heritage Foundation's foreign policy expert on the Third World, Michael Johns, the foundation's principal Reagan Doctrine advocate, visited with resistance movements in Angola, Cambodia, Nicaragua, and other Soviet-supported nations and urged the Reagan administration to initiate or expand military and political support to them.Heritage Foundation foreign policy experts also endorsed the Reagan Doctrine in two of their "Mandate for Leadership" books, which provided comprehensive policy advice to Reagan administration officials.The result was that, unlike in Afghanistan, the Reagan Doctrine was rather quickly applied in Angola and Nicaragua, with the United States providing military support to the UNITA movement in Angola and the "contras" in Nicaragua, but without a declaration of war against either country.