At least 27 members of a leftist guerrilla group in Colombia were killed in clashes with a rival faction in a fight over control of a jungle area in southwestern Colombia, military authorities reported on Sunday.The clashes, which have been the most violent in recent months, occurred in the rural area of the municipality of El Retorno, in the department of Guaviare, 300 kilometers (186 miles) southwest of Bogota, a military source said.For all the latest headlines, follow our Google News channel online or via the app.The region is strategic for cocaine production and trafficking.The clashes took place between a faction of the Revolutionary Armed Forces of Colombia (FARC) led by Nestor Gregorio Vera, known by his war name Ivan Mordisco, and another led by Alexander Diaz Mendoza, alias Calarca Cordoba, a second military source specified.Both groups were part of the so-called Central General Staff but separated in April 2024 due to internal disputes. The casualties were all from