Colombian conflict dialogue, but President Barco sent an ultimatum to the guerrillas and demanded that they immediately disarm or face military retaliation. Regional guerrilla and Army skirmishes created a situation where each violation of the ceasefire rendered it null in each location, until it was rendered practically nonexistent. By 1990, at least 2,500 members of the FARC-founded Patriotic Union had been murdered, according to historian Daniel Pecáut, leading up to that year's assassination of presidential candidate Bernardo Jaramillo Ossa. The Colombian government initially blamed drug lord Pablo Escobar for the murder but journalist Steven Dudley argues that many in the UP pointed
Jaime Ramírez Gómez enemies such as John Jairo Velásquez, alias Popeye, lieutenant of Pablo Escobar, who published a book, "Surviving Pablo Escobar" (2015), where he described the crimes of the Medellín Cartel. Colonel Ramírez was murdered one month before what would have been his promotion to Brigadier General. After his death, the Direction of the Colombian Police suspended a posthumous promotion allegedly because "he died outside a police operation". After a legal battle of seven years, the Presidency of César Gaviria Trujillo ordered his posthumous promotion to Brigadier General. Jaime Ramírez Gómez Jaime Ramírez Gómez (July 4, 1940 - November 17, 1986) was