In a remote corner of northeast Colombia, where dirt roads lead to lush hills lined with banana trees, farmers and their families have become the victims of a spate of violence unlike anything the country has seen in a generation.

As two rebel groups battle for territory, more than 54,000 people have fled their homes, and an estimated 80 people died in a matter of days, with the death toll expected to climb.

At the root of this conflict are decades-old battles over land and drug money, and the failure of past deals to lead to lasting peace. But analysts, diplomats and even Colombia’s president, Gustavo Petro, point to another, newer factor helping foment the chaos in Colombia: neighboring Venezuela.

Over the past decade, as Venezuela has descended into autocracy, its government has also drawn closer to the principal aggressor in the current conflict next door, a longstanding rebel group called the National Liberation Army, or ELN.