“How did we just kill a billion people?”

Over just three days, as I have done countless times over the last several years, a group of past and present senior U.S. government officials from both sides of the aisle gathered to wage a NATO-Russia war in a simulation at the end of 2019. In the course of what we called the NATO-Russia War of 2019, we estimated one billion people died. And if we aren’t careful, what happened in a simulation could happen if a NATO-Russia war erupts over Ukraine........