I never click on them and I don’t consume any other content related to those countries but every so often I’ll see an anti (those countries) headline in my feed and then the next few days will have pro occupied China stories
It feels like targeted propaganda since I never see good stories about the other countries and it makes me wonder why YouTube hasn’t been broken up if they are too big to monitor that
Generally the algorithm tries to recommend “controversial” content as that makes people spend more time on the platform which leads to you in turn seeing more ads in that time.
As to any specifics, nobody knows. Even Google engineers have no clue as they have no granual control of that algorithm.