We have a war that actually started in 2014 when Russia annexed Crimea and declared that is was their territory anyway. The war that started then continues today. Russian is now bombing civilian areas indiscretely. At some point the United States must say, enough is enough.
What we must do is go to Ukraine’s assistance by using specialized troops on the ground. Not a single troop needs to be infantry, rather they should be artillery and air defense artillery along we a wing of U.S. Air Force fighters.
Early in this conflict, Putin sabre rattled that he would use battlefield nukes and maybe more. He has a problem there and it is call MAD (Mutually Assured Destruction). That means we have just as much as he does, and this is not including the European countries. And if a single nuke gets used on the battlefield, it will be like 1943 where the U.S. was still building up its strength while winning battles everywhere.
To put a period on this type of action, we would have to declare India, Brasil, China, North Korea, and Russia as enemy combatants. Once we have unilaterally gone into battle, it would not take much for the rest of the NATO countries to join in, and for Russia, that is very bad. At that point Russia would have nothing to gain and everything to lose and just by the troop movements, there might be an immediate end of hostilities. NATO must stand strong and demand that Russia pull all its troops at least 200km from any non-Russian border. Not a single bullet shot by any NATO country but by putting up is enough to get Russian to shup up.
With the exception of Belarus, Russia has no friendly countries in the rest of Europe. When nearly the entirety of Europe lines up against you in a show of strength, you do nothing but admit defeat as the victor’s demands.