Venezuela opposition leader cranks up pressure on Maduro

Venezuela's opposition leader stepped up his campaign to oust President Nicolas Maduro on Friday, calling for a "major demonstration" and rejecting an offer of talks with the socialist leader.National Assembly head Juan Guaido, who proclaimed himself acting president during a huge street rally on Wednesday, said he wouldn't attend a "fake dialogue" on a crisis that has left 26 dead this week in clashes between anti-Maduro activists and security forces.