If you search Google News for ‘nuclear war’, you’ll find links to articles from a large variety of sources. Putin’s invasion and belligerent behavior has resulted in a great deal of media buzz which is rightfully spooking the world. Better relations with Russia began with the fall of the Soviet Union and has lasted to some degree up to now- about 30 years duration.

Along with the invasion of Ukraine, Putin has been making threats suggesting to some that we may be heading back to a world of nuclear brinksmanship. Nuclear sabre rattling largely disappeared sometime after the fall of the Soviet Union. For the past 30 years the world has carried on as though nuclear weapons don’t exist anymore. Everyone knows that the major powers have nuclear weapons and understands the rationale for Mutual Assured Destruction (MAD). This has been in the background. Yes, there are outliers like North Korea and Iran.

Ronald Reagan took exception to the logic of MAD and in 1983 announced the Strategic Defense Initiative (SDI), sometimes derided by the name “Star Wars”. Reagan promoted the plan by asserting that orbiting SDI platforms would make nuclear weapons obsolete, at least with strategic weapons like the ICBM. It was a grand plan to make the world safer. It certainly made the world safer for defense contractors. Many of us think that the program was really meant cause the Soviets to go bankrupt in trying to keep up with the west in SDI technology. After the Soviet Union collapsed, enthusiasm for SDI in its original form faded away. You can read about it in the SDI link.

With Putin, steel must be met with steel. He only respects strength. For this reason it may have been a mistake to announce that there would not be a no-fly zone enacted over Ukraine. Handing over certainty to Putin only emboldens him. We should have said that it is on the table and left him guessing.

The big question is what to do if, in desperation, Putin uses a tactical nuclear weapon in Ukraine? How should NATO respond? Whatever it is, there must be an unambiguous response. The choice for Putin to use a tactical nuclear weapon will only be difficult the first time it is used.

On the lighter side, if you don’t already know, now may be a good time to familiarize yourselves with nuclear weapons effects and how the bombs work. If you’re in Vegas, stop by the National Atomic Testing museum. Get familiar with mankind’s fastest and most spectacular expressway to the collapse of civilization! Remember, nuclear explosions are effectively point sources of heat and pressure. The effects fall off as an inverse square law with distance. Distance is your friend.

On the personal level, try to come to terms with the stochastic nature of radiation damage and the existence and effects of background radiation. The dose/response curve to radiation gets quite fuzzy at the lower dose levels. Remember, exposure and dose are not the same.

The tragic effects of this invasion on the Ukrainian people is horrible. But I have Russian friends and have been to Russia. I grieve for the Russian people who are unwittingly on this dreadful misadventure of Putin’s. During the last 30 years of relative peace Russians have known a much improved quality of life. It is awful to see this ripped away from them. Russia just can’t shake itself free of despotic leadership.

David Brooks has an insightful article on Putin’s view of the world and Russia’s place in it. An excellent interview can be found in Der Spiegel describing Putin’s character by Ivan Krastev from the Institute for Human Sciences in Vienna.