Venezuelans living in Colombia sing their national anthem as they protest the government of Venezuela's President Nicolas Maduro in Cucuta, Colombia, Tuesday, Feb. 12, 2019, on the border with Venezuela. Venezuela's opposition called its supporters into the streets in a campaign to break the military's support of Maduro, who refuses to let emergency food and medicine from the U.S. across the border. The sign reads in Spanish: "Juan Guaido, here are your people," referring to the opposition leader who declared himself interim president. (AP Photo/Fernando Vergara), APTOPIX