Than the economic rival aspect.
Because that was exactly what the Democratic party narrative was in 2012, with similar views echoed in Europe.
>Romney's claim drew a memorable slam from Obama during a presidential debate: "The 1980s, they're now calling to ask for their foreign policy back," Obama said, seeking to paint Romney as out of touch on a key foreign policy issue.
>Albright, who similarly criticized Romney in 2012, said she'd "underestimated" Russia back then.
https://www.google.com/amp/s/abcnews.go.com/amp/Politics/yea...
>The EU and Russia are not only neighbours but strategic partners who cooperate on a wide range of bilateral and global challenges, based on joint commitments and shared interests.
https://ec.europa.eu/commission/presscorner/detail/en/memo_1...
>In 2014, Russia’s annexation of Crimea and its military intervention in eastern Ukraine following Ukraine’s intention to sign an Association Agreement (AA) with the European Union caught the EU by surprise.
https://eu.boell.org/en/2017/07/03/eu-russia-relations-towar...
I would first say that what happened with Russia, at least to me, did not seem inevitable even with hindsight. I don't think Romney had some keen foresight - more like a lucky guess.
I also don't really see the same happening with China, though it's of course possible. A sudden economic downturn could trigger a need for an external enemy and a conflict.
But a military conflict between the US and China just seems like an absurd fantasy. It'd how you end up with a nuclear war and the death of millions. I don't think the Chinese secretly want this in the long run. They want peace and more business and more wealth
What you term 'crazy rogue state' is just countries looking at their own self interests.
India and Pakistan have been fighting. Thailand and Cambodia have been fighting. Which of those are rogue?
China has made large territory claims in the ocean and is in conflict with it's neighbors over that.
Maybe they are closer to being a rogue state than you think.