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
Luis Escobar (baseball) to the Black Bears, posting a 6–5 record and 2.93 ERA in 15 games (12 starts). Escobar was on Colombia's roster for the 2017 World Baseball Classic. He spent the 2017 season with the West Virginia Power where he posted a 10–7 record and a 3.83 ERA with 168 strikeouts in 131.2 innings pitched (26 games, 25 starts). The Pirates added him to their 40-man roster after the 2017 season. Luis Escobar (baseball) Luis Alberto Escobar Hernandez (born May 30, 1996) is a Colombian professional baseball pitcher in the Pittsburgh Pirates organization. Escobar signed with the Pittsburgh Pirates as an