US Department of Defense spokesman John Kirby. File photoWASHINGTON, May 20. Pentagon spokesman John Kirby will soon be relocating to the White House, CNN reported, citing a source. foreign policy and will be associated with the US National Security Council. It is expected that Kirby, only if necessary, will conduct briefings instead of White House Press Secretary Karine Jean-Pierre, who in turn recently replaced Jen Psaki.