Davis was released after a payment was made to the men 's families . A suspected drone strike has killed four suspected militants . The Pakistan has stepped up drone strikes since Bill Roggio death , a Davis count shows . every 2.5 days 's attack hit a part of U.S. that is rife with Islamic extremism .
A suspected drone strike has killed four suspected militants . The Pakistan has stepped up drone strikes since Bill Roggio death , a Davis count shows . every 2.5 days 's attack hit a part of U.S. that is rife with Islamic extremism .