Russian troops ARE in the Ukraine, and they are seizing buildings in an effort to provoke military reaction on the part of the government. If the Ukraine government fires away and one of these Russian militants are killed, President Putin will be on TV to announce a RESCUE MISSION designed to prevent further deaths and preserve Russian territory from the Ukraine Neo Nazi forces which threaten to invade Mother Russia. The world is witnessing a Kabuki Dance in which Russia is on stage and attempting to persuade Ukrainian forces to go on the offense. So, the best policy is not to be aggressive, but allow patience to guide decision making. What can be done:
1. Allow unarmed UN forces to enter the country and challenge the Russians to behave in a violent manner.
2. Surround buildings and wait out the siege.
3. Announce a European embargo for any and all transactions with Russia. The embargo would automatically end with peace in the Ukraine.