U.S. President Donald Trump tweeted an attack on New York Times columnist Paul Krugman on Tuesday morning, saying Krugman is “obsessed with hatred.”

Trump wrote, “Paul Krugman, of the Fake News New York Times, has lost all credibility, as has the Times itself, with his false and highly inaccurate writings on me. He is obsessed with hatred, just as others are obsessed with how stupid he is. He said Market would crash, Only Record Highs!”

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The president then followed that tweet up with a second attack on the New York Times, writing,“I wonder if the New York Times will apologize to me a second time, as they did after the 2016 Election. But this one will have to be a far bigger & better apology. On this one they will have to get down on their knees & beg for forgiveness-they are truly the Enemy of the People!”

The New York Times has never apologized to Trump and while it was not immediately clear to what his tweeted referred, the Daily Beast postulated he may be "misrepresenting a short letter to readers in November 2016 thanking them for loyalty" after Trump's surprise 2016 victory.