"This is an evaluation instrument that is finally able to capture who is highly effective and who is ineffective and who could be doing better and could use some assistance.

VOA: special.2011.08.11

In recent weeks American news media have reported that U.S.officials continue to believe the tactic is highly effective at killing top al-Qaida leaders in places where they are largely beyond the reach of the Pakistani government.

VOA: standard.2009.05.12