Latin America–United States relations General Hugo Banzer overthrew leftist General Juan José Torres in 1971; in Uruguay, considered the "Switzerland" of South America, Juan María Bordaberry seized power in the 27 June 1973 coup. In Peru, leftist General Velasco Alvarado in power since 1968, planned to use the recently empowered Peruvian military to overwhelm Chilean armed forces in a planned invasion of Pinochetist Chile. A "Dirty War" was waged all over the subcontinent, culminating with Operation Condor, an agreement between security services of the Southern Cone and other South American countries to repress and assassinate political opponents, which was backed by the US government.
Juan Ramírez de Velasco Tucumán by Philip II of Spain to replace Hernando de Lerma. Ramírez served in the government of Tucuman between 1586-1593. In 1588 being the governor of Tucumán Juan Ramirez de Velasco made expeditions against the Indians in calchaquí valley and won the allegiance of a son of Juan Calchaquí. Shortly after he founded the city of Todos los Santos de la Nueva Rioja. In 1592 he founded the city of Madrid de las Juntas in the present department Metán. In 1594 Juan Ramírez Velasco was appointed commander of the Governorate of the Rio de la Plata a position he held