The European Union's foreign policy chief Josep Borrell met in Brussels on Wednesday with Venezuela's opposition leader Juan Guaidó.
The United States and about 60 other nations recognize Guaidó, who heads the opposition-dominated National Assembly, as Venezuela's legitimate president.
They contend Venezuelan President Nicolás Maduro's 2018 re-election was invalid and marred by fraud.
Guaidó, however, has no control over government institution or the military.
Guaidó met on Monday in Colombia with US Secretary of State Mike Pompeo and was in London on Tuesday to meet British Foreign Secretary Dominic Raab and Prime Minister Boris Johnson.
Gaudió was also scheduled speak at the annual World Economic Forum in Davos, Switzerland.