U.S President, Barack Obama, says he may have to speak out after leaving office if he feels his successor, Donald Trump, is threatening core American values.
He says, as a private citizen, he might speak out on certain issues if the need arises.
By convention, former presidents tend to leave the political fray and avoid commenting on their successors.
However, outgoing President Obama, speaking at a news conference at the APEC summit in Lima, Peru, said he intends to assist, Mr Trump and give him time to outline his vision.
Republican Donald Trump, won the U.S presidential election on November 9, 2016 as against his Democratic counterpart, Hillary Clinton.
The President-elect has begun the transition process and started choosing members of his cabinet, as he will officially resume office as the 45th U.S President on January 20, 2017.