So far, Turkey has refused to allow Russian oil tankers to pass through the Strait of Gallipoli until Russia provides proof of insurance.
I hope Turkey, as a member of NATO, stands firm.
This alone causes a loss of $52,000,000 in revenue per day.
In addition to lost revenue, Russia will have a lot of oil that needs to be stored. If this continues for a couple of months, Russia will have to start capping wells in the Black Sea area.
I believe that there is already a backup of Russian tankers waiting to pass through the Strait of Gallipoli to enter the Black Sea.
Russia sinks or swims on it oil revenues.
That pretty much sums it up.
I am guessing that Erdogan on Turkey will start letting Russian tankers through when he is satisfied with a big enough bribe on each one - and he is greedy.