Aerial view of the Tienditas Bridge, in the border between Cucuta, Colombia and Tachira, Venezuela, after Venezuelan military forces blocked it with containers on February 6, 2019. - Venezuelan military officers blocked a bridge on the border with Colombia ahead of an anticipated humanitarian aid shipment, as opposition leader Juan Guaido stepped up his challenge to President Nicolas Maduro's authority. (Photo by EDINSON ESTUPINAN / AFP)
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