Mar.20, 2014 | ERDOĞAN
Erdoğan & Crimea: The Dream that Was not Ment to Be
According to the 1783 Treaty of Küçük Kaynarca, "if Crimea declares its independence, it must return to Turkish control". I guess if Erdogan was not now tied up in scandal frenzy and dealing with public discontent, he might have been all over this (he could also play the "minority protection" card regarding the Tatars to reinforce legitimacy, plus the army might be pleased with all the swashbuckling opportunities).
I doubt that the fact that this claim would have been insane and ludicrous would stop him, and come to think about it, it could even work as a ploy for public distraction. In general though, the fate of both agreements points out how tentative and transient are in effect all International treaties.