Regional relations have also vastly improved under the Santos Administration (2010-2018). Issues however remain regarding spillover of the FARC leftist-terrorist group, being chased out of hiding in rural areas of Colombia and finding save-havens in non-monitored areas of bordering states. The FARC numbers have significantly diminished in the last decade to an estimated 5,000-7,000. And while joint-military collaboration has steadily increased with the bordering countries of Brazil, Panama, Peru, and Venezuela, there have been tensions between Colombia and Ecuador regarding the issue. In 2002, the Ecuadorian government closed its main border crossing with Colombia, restricting its hours of operation. Ecuador continues to voice its concerns over an influx of émigré stemming from guerilla activity at its borders. Evidence has since emerged however, suggesting that a significant number of the FARC's foot-soldiers in and around the Colombia–Ecuador border, consist of Ecuadorian émigré who joined the leftist terrorist group out of need. Returning Ecuadorian émigré have faced re-entry restrictions.