Military Fight against Islamic State: what Pentagon officials say are challenges ahead (+video)

Airstrikes alone will not be enough, Defense Secretary Chuck Hagel said Friday. The fight in Syria against the Islamic State promises to be particularly complex, with a need for as many as 15,000 trained rebel fighters.

By , Staff writer

Larry Downing/Reuters

It will take between 12,000 to 15,000 trained fighters with the moderate rebel forces to begin to recapture territory lost to the Islamic State (IS) in Syria, America’s top military officer warned Friday.