The inauguration of Venezuelan President Nicolás Maduro has left his opponents grappling with conflicting feelings of hope and disappointment, pondering why the leftist leader could not be stopped despite credible evidence that he had lost the election last year.

Venezuela's authoritarian President Nicolás Maduro was sworn in for a third six-year term on Friday, following an election that many in the international community and the opposition considered rigged.

The United States on Friday imposed sanctions on eight Venezuelan officials and increased to $25 million the reward it is offering for the arrest of President Nicolas Maduro on the day of his inauguration to a third term following a disputed election last year.