The Colombian government and rebel negotiators have reached a fundamental agreement to allow the rebels to take part in national politics once they end their insurgency.
The deal was announced Wednesday in Havana and is part of the year-long peace talks between the government and the Revolutionary Armed Forces of Colombia, or FARC.
Both sides call the agreement a democratic opening that will lead the way to a lasting peace.
The peace talks, sponsored by Cuba and Norway, cover a number of major issues, including convincing the rebels to disarm.
FARC has been fighting a 50-year-long guerilla war against the Colombian government. It partially finances its war through drug trafficking and frequently kidnaps foreigners and Colombian officials.