Gen. Odierno: Destroying ISIS Will Take '10 to 20 Years'

The battle to defeat the Islamic State (ISIS) will last "10 to 20 years" — longer than previously indicated by the Obama administration, the Army's top general said Friday.

"In my mind, ISIS is a 10-to-20-year problem, it's not a two-year's problem," Gen. Ray Odierno, the Army chief of staff, told reporters, DefenseNews reports. "Now, I don't know what level it will be a problem, but it's a long-term problem."

Since the airstrikes against ISIS began last August, the Obama administration has only defined the campaign as a "years-long" battle...