President Obama's refusal to use the words "Islamic extremism" in the War on Terror has confounded even some high-ranking members of his own administration.
One of them was head of the Defense Intelligence Agency, Lt. General Michael Flynn.
In 2014, General Flynn lost his job over testimony he gave to Congress about the radical ideology behind the terrorists' jihad.
In his new book, Field of Fight, he outlines his plan to defeat Radical Islam.
Full Measure spoke with General Flynn and asked and what was the uncomfortable truth he told Congress that caused the Obama administration to fire him.