Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE will have to recognize and work on weaknesses in his temperament, President Obama said Monday, if he wants to be a successful president.

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"Trump has to acknowledge his weaknesses," Obama said in a news conference with reporters, his first extended comments since the election and his meeting with the president-elect last week.

"I think what will happen with the presidential-elect — there will be certain elements of his temperament that will not serve him well unless he recognizes them and corrects them. Because when you're a candidate, and you say something that is inaccurate or controversial, it has less impact than it does when you're president of the United States."

Obama continued: "Everybody around the world is paying attention. Markets move. National security issues require a level of precision in order to make sure you don't make mistakes, and I think he recognizes that this is different and so do the American people."

Obama declined to comment on whether he thought Trump was qualified for the office.

The president was one of Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE's most aggressive surrogates on the campaign trail, frequently hitting Trump on his temperament and lack of experience.