Sihanouk, furious with the course of events, quickly assumed leadership, in absentia, of the National United Front of Kampuchea (FUNK), a government in exile that was quickly recognized and supported by the North Vietnamese, the VC, the Laotian Pathet Lao, and the Khmer Rouge. In the wake of the removal of Sihanouk, the Lon Nol government turned over captured documents to the U.S. disclosing the full extent of his participation in the infiltration effort. Between December 1966 and April 1969, "Unit K-20" had facilitated the infiltration of 29,000 tons of cargo into Cambodia. With his acquiescence, the unit had purchased 55,000 tons of rice annually from the government and another 100,000 tons directly from Cambodian farmers.