Mr Obama, speaking ahead of a trip to Europe and Latin America, said one of the most important things he could do during his visit was to reassure U.S. allies who may be concerned following Mr Trump's victory over Democrat Hillary Clinton last week.
Barack Obama will travel Monday to Greece and Germany in a final official visit designed, in a unusual bit of political contortion, at reassuring anxious Europeans about a man he once warned was "unfit" for the presidency: Donald Trump. "It would not be appropriate for me to comment on every appointment that the president-elect starts making if I want to be consistent with the notion that we're going to try to facilitate a smooth transition", he said.
In this November 9, 2016, photo, President Barack Obama pause while speaking in the Rose Garden of the White House in Washington. It takes place with many of Obama's subordinates and liberals across the nation still barely able to believe he will be succeeded by Trump, whose volatile character and taboo-busting rhetoric could hardly strike a more overt contrast to the current president.
And he said Trump tapped voters' anxiety, but also enthusiasm "in a way that was impressive". "That's powerful stuff. I think he is coming to this office with fewer set hard and fast policy prescriptions than a lot of other presidents might be arriving with".
"Do I have concerns?" Absolutely. Of course, I have concerns. "He and I differ on a whole bunch of issues".
The commander-in-chief, however, was less sure that Trump wouldn't seek to unravel the global agreement to rein in Iran's nuclear programs and Obama essentially acknowledged that he won't fulfill one of his own campaign promises to close the detention facility at the Guantanamo Bay naval base in Cuba.
His advisers, pointing to the results of that election but also to the equally stunning British vote to leave the European Union, said the United States president would offer his thoughts on the reasons so many people in the world feel "like decisions are made beyond their control".
In more than a year since the deal went into effect, the evidence was clear that "they have abided by the agreement", Obama said of the Iranians. "Regardless of what experience or assumptions he brought to the office, this office has a way of waking you up".
Obama was repeatedly pressed about Trump's temperament, which he had criticized extensively during the campaign.
"There are going to be certain elements of his temperament that will not serve him well unless he recognizes them and corrects them", Obama said.
He said, "I recognize that that has not worked", and said his government continues to "try to find some formula that would allow us to see that suffering end".
CM Jayalalithaa's condition improves but she will not leave hospital soon
Doctors from the United Kingdom and AIIMS besides physiotherapists from Singapore, joined the team of specialists to treat her. Jayalalithaa for not expressing even words of comfort to people suffering cash crunch but focussing on their votes instead.
President Barack Obama says he thinks Donald Trump will seek to "send some signals of unity" to people alienated by his ferocious campaign.
The president said that in his White House meeting with Trump last week on the transition he found Trump in agreement on maintaining USA core commitments across the globe, including a commitment to North Atlantic Treaty Organisation.
President Barack Obama says that he's been unable to close the prison at Guantanamo Bay, Cuba, because of "congressional restrictions".
It was supposed to be his grand valedictory tour.
But Obama, who was the target of some of that rhetoric, has embraced the role of national hand-holder.
"I hope it was useful", Obama said. After all, it was Trump who dubbed himself "Mr. Brexit" after the U.K.'s vote to leave the European Union.
"I think it is important to give him the room and the space to do that, it takes time", Obama said.
That's right. They thought it came completely staffed...
After his news conference, Obama departed a short time later to travel to Greece, where he will spend Tuesday and part of Wednesday before heading for Berlin, and finally Peru before returning to the United States on Sunday.
Obama argued Monday that despite there being some "deeply disaffected" people, the country he will turn over to Trump is in better shape than it was in when he took office in 2009, amid the worst financial crisis since the Great Depression.