It's not Crimea. He's already got the war going on in the Donbass, that region of Eastern Ukraine. There's a buildup of troops in Trans-Dniestr, and Moldova is seriously concerned about their situation. This weekend we had Russian Bears, flying close to the airspace of Estonia and Latvia, intercepted by CF-18 fighter jets. We also had Putin and the Russian military during the month of September fly over 20 sorties that came within NATO, as well as NORAD, airspace and flew right through Sweden, which was really an act of war. They flew right through Swedish airspace before they were intercepted in mid-country by a Griffin.
Here's an individual who is acting not rationally, not reasonably, and is being a bully. I question you saying he's not a threat to our sovereignty.