How about we redirect some of the defense budget into this social sciences research (in the name of "being able to better detect suspicious behavior on the part of a potential terrorist at an airport" if we need to motivate it to the "Won't someone please think of the terrorists" crowd?)
By one set of measurements on the Wikipedia page, we spend about 4 and a half times what China does in military spending. We outspend China, Saudi Arabia, Russia, the UK, France, Japan, India, Germany, and South Korea COMBINED. If we redirected or cut 10% from the military budget, we would "only" outspend China, Saudi Arabia, Russia, the UK, France, Japan, and India. I wouldn't think Germany and South Korea are huge threats to the US.
By the other list on that page, we only outspend China 2.8 to 1, we outspend China, Russia, Saudi Arabia, France, the UK, and India combined and cutting our spending by 10% would cause us to outspend China, Russia, Saudi Arabia, France, and the UK.