WASHINGTON (AP) — Robert Gates, a former defense secretary and spymaster, is backing lawmakers' proposal to form a special court to review President Barack Obama's deadly drone strikes against Americans linked to al-Qaida.

Gates, who led the Pentagon for Presidents George W. Bush and Obama and previously served as the Central Intelligence Agency's director, said Obama's use of the unmanned drones follows tight rules. But he shares lawmakers' wariness over using the unmanned aircraft to target al-Qaida operatives and allies.

"I think that the rules and the practices that the Obama administration has followed are quite stringent and are not being abused. But who is to say about a future president?" Gates said in an interview broadcast Sunday.