The 50-year-old Revolutionary Armed Forces of Colombia (FARC), once considered the best-funded insurgency in the world, is at its smallest and most vulnerable state in decades, due in part to a CIA covert action program that has helped Colombian forces kill at least two dozen rebel leaders, according to interviews with more than 30 former and current U.S. and Colombian officials.
The secret assistance, which also includes substantial eavesdropping help from the National Security Agency, is funded through a multibillion-dollar black budget. It is not a part of the public $9 billion package of mostly U.S. military aid called Plan Colombia, which began in 2000.
The previously undisclosed CIA program was authorized by President George W. Bush in the early 2000s and has continued under President Obama, according to U.S. military, intelligence and diplomatic officials. Most of those interviewed spoke on the condition of anonymity because the program is classified and ongoing.