The US backed off from the black sea after Russian announced closure.

The US dared not have a direct faceoff with Russia in the black sea after Russia announced to seal off the black sea for 6 months.

https://www.channelnewsasia.com/news/world/us-cancels-black-sea-deployment-of-two-warships--turkey-14624570

No wonder the US and EU didn't do much to help Myanmar because they didn't want to confront Russia directly.

Since the US dares not to confront Russia directly, China and Russia need to team up to deal with the US and its cronies.