Donald Trump admitted to conservative radio host Hugh Hewitt this week that he didn't know the names of leaders of top terror groups, including Hezbollah, Al-Qaida and the Islamic State in Iraq and the Levant.

"Do you know the players without a scorecard, yet, Donald Trump?" Hewitt asked. "No, you know, I'll tell you honestly, I think by the time we get to office, they'll all be changed. They'll be all gone," Trump replied.

Trump called these "gotcha" questions, and said he would learn about national security and foreign policy later on. Trump said he would eventually find someone like Gen. Douglas MacArthur to handle national security.

Trump later called his interviewer "a third-rate radio announcer."

Bloomberg News