BBC looks into the relationship between Cuba and Venezuela

Cuba has held close relations with Nicolás Maduro's Venezuela. But with Maduro gone after a military operation in which Maduro was seized, Havana could be exposed if oil supply collapses.

Trump suggested on Sunday that US military intervention in the country wasn't needed, because Cuba is "ready to fall."

The BBC's Cuba correspondent, Will Grant, reports from Cúcuta, on the Colombia-Venezuela border.

Video produced by Marina Costa and Gabriela Boccaccio. Graphics by Jean-li Lee.