So, what´s next? Turkey will block the Bosphorus for Russian traffic?
Won't work at all because that would be an open declaration of war. They've tried this against USSR, defence minister said then "Stop that nonsense or we'll create new strait on the place of Istanbul". And they stopped a blockade of Bosphorus immediately.
Russia could turn off the gas in retaliation which would probably soon lead to an Erdogan "government in exile" in London or some other favorite shelter for favored criminals.
Turning off the gas flow is not an option yet, current pretext isn't enough for breaking the contract.
soon lead to an Erdogan "government in exile" in London or some other favorite shelter for favored criminals.
This will happen even without that. Erdogan is currently acting exactly like Yanukovich, he's doing everything to be overthrown. Probably, because he wants to drop this business, leaving the dirty incomings untouched. I'm pretty sure he have made enough money for the rest of life.