President Nicolas Maduro ordered the closure of Venezuela's border with Brazil on Thursday in an increasingly fraught power struggle. Guaido set out in a convoy of vehicles to personally pick up US aid being stockpiled on the other side of the Colombian border, defying Maduro's military to stop him.
Venezuela's Supreme Court has banned opposition leader Juan Guaidó from leaving the country and frozen his bank accounts. The move comes amid an escalating power struggle, after Mr Guaidó declared himself interim president last week.