ISIS on a 'Different Level' Than al Qaeda, Says Retired General John Allen

— -- The retired Marine Corps general at the forefront of the U.S.-led coalition in the fight against ISIS told ABC News in an exclusive interview that the terror group “is at an entirely different level than al Qaeda was.”

ISIS is "better organized [than al Qaeda]. It’s command and control is better,” John Allen, the Special Presidential Envoy for the Global Coalition to Counter ISIS, told ABC News.

When asked whether ISIS is a threat to the home front, Allen said “we should take it very seriously."

After ISIS appeared to burn Jordanian pilot Lt. Muath al-Kasasbeh alive in a new video, Allen said the country was helping the U.S. against ISIS more than ever.