“Everyone from the president of the United States to the head of Cyber Command has acknowledged that the rise of the Islamic State represents a huge intelligence failure for the United States, a failure that’s been blamed on the withdrawal of troops in 2011. But the solution to the intel gap is not necessarily more boots on the ground, the Defense Department’s Undersecretary for Intelligence Michael Vickers said.”
Source: Vickers: Boots on the Ground Not Necessary for Intel in Iraq – Defense One