White House counterterror chief John Brennan has seized the lead in guiding the debate on which terror leaders will be targeted for drone attacks or raids, establishing a new procedure to vet both military and CIA targets.

The move concentrates power over the use of lethal U.S. force outside war zones at the White House.

The process, which is about a month old, means Brennan’s staff consults the Pentagon, the State Department and other agencies as to who should go on the list, making a previous military-run review process in place since 2009 less relevant, according to two current and three former U.S. officials aware of the evolution in how the government targets terrorists.