In September 1962, Thurmond called for an invasion of Cuba. In a February Thurmond stated that "the brush curtain around Cuba is a formidable Soviet strategic military base" and estimated between 30,000 and 40,000 Cuban troops were under the leadership of a Soviet general. Hours after the statement was made public, a Pentagon official disputed his claims as being "at wide variance with carefully evaluated data collected by U.S. intelligence" and called for Thurmond to release his proof to the Defense Department.