Republican presidential front-runner Donald TrumpDonald John TrumpChelsea Clinton announces birth of third child Ukrainian officials and Giuliani are sharing back-channel campaign information: report Trump attacks 'the Squad' as 'racist group of troublemakers' MORE is not backing down from his claim that “thousands of people” in Arab communities in New Jersey were cheering on 9/11.

Trump defended himself by telling an NBC News reporter that he has "the world’s greatest memory" and that everybody knows that.


The billionaire real estate mogul insisted that his claims were right and touted the support he received on Twitter. 

“He was adamant,” NBC News reporter Katy Tur told MSNBC after a lengthy phone call with Trump. 

Trump said Monday that he wants apologies from those who doubt his recollection of the 9/11 terrorist attacks.

“I want an apology,” he tweeted. "Many people have tweeted that I am right.”