If you expect me to take my eyes off the terrorists (foreign and domestic), the Russians, North Koreans and so on, to entertain your fever dream of, I don't know, Barak Obama or whatever being a threat, you're gonna be disappointed.
National security sir, is not a game.
Game theory can deliver success in battle. In some cases, even war. But not in securing a nation. Which is a different matter entirely.
Books through the centuries and millennia from Sun Tzu to Machiavelli framing it as an art have proven more enduring than those framing it as a game. There is a reason for that.
You don't even have to be good at that art. But like any art you'd better at minimum have a discerning eye if you expect to have any chance of getting anything of importance that you may want. When you don't have a discerning eye, you start going after things that hold neither importance nor permanence. You expend all that well honed knowledge of game theory in the pursuit of foolish objectives.