President-elect Donald Trump says Venezuela's embattled opposition leader must be protected as President Nicolas Maduro takes the oath of office for a third six-year term.

Nicolás Maduro took the oath before parliament, vowing his third six-year term in office would be a "period of peace".

President Nicolás Maduro extended his increasingly repressive rule over Venezuela until 2031 when he was sworn in, despite credible evidence that his opponent won the latest election and following