What the Yanks failed to realize is that most countries that have disputes with China are actually super friendly with Russia. Besides US proxy states like Japan and South Korea, every other Asian country that's not friendly to China like India has warm diplomatic relations with Russia, which means they'll most likely check out of any real attempt to contain China since that would mean displeasing Russia. In the end, an anti-China alliance is going to be nothing but US proxies and Australia, so a grand total of 6ish countries.