I don’t see how letting the Russians invade a sovereign country without consequences will strengthen our position in the future. There a number of things we can do short of war. We just don’t have the will to do them. Our biggest problem is the Obama administration. We will always be weak with that crowd running things.
The only reason they occupied Crimea was because it looked like they were going to be kicked out of the base by the new government. So you are just letting them have land they had a lease and agreement to use for a few decades. Now if they move into the Ukraine proper, you have a good point. This is not Georgia where they had no lease or agreement to use land. What if Cuba was going to kick us out of our base ? Yes Obama would probably hand it to them on a silver platter, but we have been there for decades.