Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) Half his country may not support his efforts at peace, but Colombian President Juan Manuel Santos now has a Nobel Peace Prize for pursuing a deal to end the longest-running war in the Americas. Santos accepted his award Saturday after brokering a deal to stop the fighting in the 50-year conflict with the leftist rebel group Revolutionary Armed Forces of Colombia, better known by its Spanish acronym, FARC. "After six years of serious and often intense, difficult negotiations ... this agreement marks the beginning of the dismantling of an army and its conversion into a legal political movement," he said at the ceremony in Oslo, Norway.President Juan Manuel Santos honored for peace deal to end decades-long civil warColombia's Congress passed the deal after voters repudiated it in a referendum 
 Question:But a path to peace in _'s civil war is still uncertain.

Colombian