> Turkey has stated continuously in last few days that it will follow the Montreux Convention, under which they cannot restrict vessels going back to their home base, including Russian ones.
Your comment is misleading:
"Turkey called Russia's invasion of Ukraine a "war" on Sunday in a rhetorical shift that could pave the way for the NATO member nation to enact an international pact limiting Russian naval passage to the Black Sea."
"Under the 1936 Montreux Convention, Turkey has control over the Dardanelles and Bosphorus straits that connect the Mediterranean and Black seas and can limit the passage of warships during wartime or if threatened."
> "Clearly they are reconsidering what they said."
I don't think that is the case. The short answer is, here's a link to a more detailed version of the article above - their recent change is calling it a "war", which allows them to trigger Montreux:
"Yet Cavusoglu (Turkey Foreign Minister) reiterated that Turkey cannot block all Russian warships accessing the Black Sea due to a clause in the pact exempting those returning to their registered base."
The long answer is, if you have been following European and Turkish politics in the last few years, you would see that Turkey is getting closer and closer to Russia (the F-35 debacle, getting S400 missile batteries, Turkstream etc). Turkey is also smart enough to play both sides. So, this move (to do nothing) is expected.
Your comment is misleading:
"Turkey called Russia's invasion of Ukraine a "war" on Sunday in a rhetorical shift that could pave the way for the NATO member nation to enact an international pact limiting Russian naval passage to the Black Sea."
"Under the 1936 Montreux Convention, Turkey has control over the Dardanelles and Bosphorus straits that connect the Mediterranean and Black seas and can limit the passage of warships during wartime or if threatened."
Clearly they are reconsidering what they said.