“Turkey can stop the passage of warships through the straits. But there is something else in the Montreux Convention. If there is a demand to [let] the ships of countries at war to return to their bases, it must be allowed,” he added.
The Turkish minister said Ankara is examining this issue.
Ukraine to Turkey:
Close the Bosphorus Strait to Russian ships! Stand with Ukraine!
Turkey (thinking about the wrath of Putin):
Ermm, umm, errr, hmmm.... actually we cannot do it 100%. We have the Montreux Convention, its kinda technical. So its a.... NO!