In an interview on Meet the Press, Trump calls Clinton a liar.
It’s just another Hillary lie. She lies like crazy about everything — whether it’s trips where she was being gunned down in a helicopter, or an airplane. She’s a liar and everybody knows that.
Later he tweets:
Hillary Clinton lied when she said that "ISIS is using video of Donald Trump as a recruiting tool." This was fact checked by @FoxNews: FALSE
— Donald J. Trump (@realDonaldTrump) December 20, 2015