Steve Forbes looks to the historical example of "X"—the pseudonym of George F. Kennan, who advanced the policy of containment that helped serve as a North Star for U.S. foreign policy for decades—to argue that we now need a new guiding principle to take us safely through our present confused, dangerous times. Read the full story on Forbes: Subscribe to FORBES: https://www.youtube.com/user/Forbes?sub_confirmation=1 Fuel your success with Forbes. Gain unlimited access to premium journalism,