I remember in elementary school we used to have air-raid drills, like fire drills. When the siren went off we would put our heads under our desks or be walked down to the school’s basement and wait for it to be over. Both very effective plans, I’m sure, if the Rooskies came a-knockin’ with their 50-megaton friends. The Cold War was a pretty tense time in our nation’s history. The media lately have been recalling a statement by Russian President Vladimir Putin from several years ago: “The breakup of the Soviet Union [in 1991] was the greatest geopolitical tragedy of the 20 th century.” Putin seems to be trying to put the Soviet Union back together. In 2008, a couple years after Putin made that statement, Russia invaded Georgia, pushing ethnic Georgians out of about 25% of that country and creating two “independent” states—South Ossetia and Abkazia—recognized by a handful of Russian allies. Now, with Russia having used its military to enforce the Crimean Penins