sentences:  The military in Argentina sent agents of the Batallón de Inteligencia 601 and the SIDE to Nicaragua in 1978 with the aim of apprehending and eliminating Argentine guerrillas fighting within the ranks of the Sandinistas.A special commando team from Argentina worked in conjunction with Somoza's OSN (Office of National Security) and its Argentine advisors with the objective of capturing exiled squadrons from the ERP and the Montoneros.Following the overthrow of Anastasio Somoza Debayle by the Sandinista Front, Argentina played a central role in the formation of the Contras.