In November 2011, the Colombian military achieved one of its greatest successes when it killed Alfonso Cano, the supreme commander of the Revolutionary Armed Forces of Colombia (FARC), in the southwestern department of Cauca. Cano was quickly replaced by secretariat member Timoleon “Timochenko” Jiménez. With Timochenko believed to be operating in the northeastern department of Norte de Santander, in a remote, drug-producing area known as the Catatumbo region, the primary focus of Colombia’s military operations shifted northward. This part of Colombia is unique because, in addition to the FARC, two other guerrilla groups—the National Liberation Army (ELN) and the People’s Liberation Army (EPL)—operate here.