At least 23 people have been killed in clashes between rebel groups in Colombia's northeastern state of Arauca, according to the country’s civilian and military authorities.

The United Nations documents “serious” human rights violations committed by Colombian security forces during a crackdown on widespread protests in the South American country earlier this year.

The US removes the Revolutionary Armed Forces of Colombia (FARC), a former rebel group, from its list of terrorist organizations, five years after the group reached a peace deal with the government in Bogota.

Colombia sends 14,000 military soldiers to a restive northern region bordering Venezuela to allegedly combat drug trafficking, terrorism, and organized crime funding.

Venezuela says it will reopen its border with Colombia, after more than two years of closure, in an effort to “turn the page” in trade relations with Bogota.

Colombia boosts troop presence on borders with Venezuela after five Colombian soldiers were killed in an attack claimed by the National Liberation Army (ELN) and FARC, guerrillas.

Juan Guillermo Jaramillo is the co-author of an inventory that led to Colombia being recognized as having the widest variety of butterfly species in the world.

Thousands of protesters have demonstrated peacefully in Colombia to urge its congress to approve union-backed social and economic policies supporters say will benefit the most vulnerable.

Police in Colombia detain 70 people in new anti-government protests that draw thousands of people to the streets across the South American country.

Venezuelan President Nicolas Maduro says 10 Colombian “paramilitaries” have been among those killed during clashes between security forces and armed gangs over the past week.