Bolivarian National Guard troops man a barricade blocking access to the Francisco De Paula Santander international bridge in Urena, Venezuela, on the border with Colombia, Saturday, Feb. 23, 2019. Venezuela's National Guard fired tear gas on residents clearing a barricaded border bridge between Venezuela and Colombia on Saturday, heightening tensions over blocked humanitarian aid that opposition leader Juan Guaido has vowed to bring into the country over objections from President Nicolas Maduro. (AP Photo/Fernando Llano)

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