High-stakes return for Venezuela's self-declared interim president

The four men in green walk calmly down the street, to gentle clapping from the people around them. They appear to be defectors, shown on a video posted to social media from Wednesday in the town of Herran, Colombia. While CNN has not been able to verify the video, the scene is now a common one in Colombia, from a steady drip of Venezuelan soldiers that have given themselves over to Colombian immigration officials over the past week. As of Thursday, an astounding total of 567 had defected.