Eh? I'm not saying it's okay for Russia to invade. Quite the reverse. I'm saying that the mere presence of Russian language signs in Crimea doesn't mean it was

Eh? I'm not saying it's okay for Russia to invade. Quite the reverse. I'm saying that the mere presence of Russian language signs in Crimea doesn't mean it was caused by the recent events. Your example shows the exact same property. :-)