Meanwhile, back in the thread...
Reports from the Crimea indicate that Russia has scuttled one of it's own ships in order to prevent the Ukrainian navy from entering the Black Sea. Even if we suspend reality for a moment and pretend that the "self defense" forces in the Crimea aren't really Russian special forces, blockading the Ukrainian navy is clearly an act of war:
http://mypetjawa.mu.nu/archives/217821.php
That's better than sinking the Ukrainian ships. It is a non violent way to avoid a fight.