You have to have some ability to prevent power. Let me give you a hypothetical scenario from Crimea.
At about day four, day five—we knew they were within reach because they were pre-deployed for Sochi—had a NATO vessel sailed into the Ukrainian part of the naval harbour at Sevastopol, I think he would have thought twice about sinking three hulks at the entry to that harbour and in essence, eliminating the Ukrainian navy from consideration. And he has now gained for free however many ships the Ukrainian navy had based there. There was nothing in the playbook that even made him think twice.