>> What would happen... The probability of nukes hitting Moscow, New York, Paris, and London in the next 48 hours would skyrocket. One of the lowest-levels of

>> What would happen... The probability of nukes hitting Moscow, New York, Paris, and London in the next 48 hours would skyrocket. One of the lowest-levels of escalation that Nato could take in response would be to deploy conventional assets into Ukraine, particularly fighter jets and anti-air systems. If Russia wanted to maintain a military presence in Ukraine, it would likely have to use further tactical nukes against Nato assets. Nato would have to respond in kind in order to maintain a credible deterrent. Very quickly you have a tactical nuclear exchange which can escalate (in minutes) to a strategic exchange. 15 minutes later all of the cities we know and love are gone. There's a non-negligible chance that the situation escalates to a global exchange including China, North Korea, Japan, and Australia. We can only hope that some parts of the third world are spared from which humanity can once again flourish. Even then, the nuclear winter likely kills an additional billion people due to mass crop failure and famine.