This whole shift to China as the new "enemy" is fascinating. Even though Trump is more or less mental, and is recognised as such, he has somehow managed to whip up this new cold war frenzy even among his opponents in the media. I can barely remember any focus on China before Trump. Not saying that there shouldn't be any but it's still interesting how this can spread to the entire country even if the author is an untrustworthy demagogue.
Other countries historically accompanying the US in the top GDP pair included the soviet union and japan, so no surprise that today china would get the two minutes hate.
(right now I'd say india is too underdeveloped and too important a part of Oceania, but assuming the US remains in a position to believe it embodies power two or three decades from now, we'll see if india gets the hate, too.)
For some value of "defense". Back when the US DOD was called Department of War, it had (at various times) flagged boots on the ground in china[1], north korea, and russia[2].
[1] In the lost opportunities department, General Wedemeyer on "who lost china?" (emphasis mine):
> "If Uncle Sugar, Russia, and Britain united strongly in their endeavor to bring about a coalition of these two political parties [the Kuomintang and the Chinese Communist Party] in China by coercing both sides to make realistic concessions, serious post-war disturbance may be averted and timely effective military employment of all Chinese may be obtained against the Japanese. I use the term coercion advisedly because it is my conviction that continued appeals to both sides couched in polite diplomatic terms will not accomplish unification."
[2] thanks to burnaway's excellent search fu: https://news.ycombinator.com/item?id=24490540 I learned US propaganda in 1914-1918 had not only been officially going to russia, but also the then-white entities (where American Expeditionary Forces were operating) archangel and siberia.