Turkey won’t allow military ships to pass the Bosporus in any direction while there’s a war on. This prevents Russia from reinforcing their Black Sea fleet but also prevents Western navies from entering.

There’s nothing inherently bad about propaganda. The problem with Russian propaganda is that it’s trying to justify a brutal invasion that has killed hundreds of thousands of people, among them children buried in rubble by missile strikes. The US did the same after it’s invasion of Iraq. It was wrong then and it’s wrong now.