Consider these 4 inconvenient questions as the Ukraine war moves forward

Most public discussion this winter reflects a conviction that Ukraine must — and can — win a decisive victory. But what constitutes a win against a country such as Russia? As we consider the road ahead, we cannot escape the brute fact that Putin commands an arsenal of roughly 6,000 nuclear weapons that could kill us all. Lest we forget, consider his announcement this week that Russia is suspending participation in New START, the last remaining arms control treaty it had with the United States.