From The New York Times:

During the height of the wars in Iraq and Afghanistan, the United States military often carried out dozens of daily operations against Al Qaeda and other extremist targets with heavily armed commandos and helicopter gunships. But even before President Obama’s speech on Wednesday sought to underscore a shift in counterterrorism strategy — away from the Qaeda strongholds in and near those countries — American forces had changed their tactics in combating Al Qaeda and its affiliates, relying more on allied or indigenous troops with a limited American combat role.