It is something that I have recently seen discussed various places, and lots of people seem to think it is guaranteed to happen one day. China needs both the room for its people and the resources and Russia could only stop them with nuclear war. As I say though, it's all new to me. I only heard about it for the first time a few weeks ago.
A Black Sea ceasefire has been agreed by Ukraine and Russia after both sides had separate talks with US officials in Saudi Arabia over the past two days. The White House also says the US "will help restore Russia's access to the world market" for certain products. Follow the latest here.