deputy seeker, that he has his eye on. that this moment matters for the whole geometry and security architecture of europe and we must stand firm. >> reporter: it's that security architecture that boris johnson referred to there. that vladimir putin made it very clear he wants to undo, turn the clock back to 1997 before so many eastern european nations joined nato, that europeans completely ruled out. >> thank you so much. joining me now is pentagon press secretary john kirby. thank you for being here, john, i appreciate your time. >> you bet. >> i heard you say that these troops would be deployed as part of the nato response force, a multinational force. who makes the final call then to deploy? is it nato commanders or president biden? >> well, in terms of the nato response force, obviously, their