China is building islands all around the South China Sea: https://www.scmp.com/news/china/diplomacy-defence/article/21...
China now has a presence in Africa too: https://www.nbcnews.com/news/africa/pentagon-accuses-chinese...
The Africa still isn't a proper comparison - building few bases where you invest tons of money and extract crutial resources isn't the point here, bloody invasions that destroy whole region for generations and kill millions innocent are. And this is something specific to US, even Russia didn't do anything comparable.
Anything after WWII, maybe but just maybe including Korea is actively adding evil to this world. But I suspect not many americans are willing to accept truth here
As for countries being militarily aggressive, and causing direct conflict since WW2, sure the US, but there have been numerous wars since. A few at the top of mind —-First Afghanistan War ( Russia), Battle of Falkland Islands (Argentina), Iran vs Iraq War
>In March, Hanoi lodged a protest with Beijing after a Vietnamese fishing vessel crashed and sank after it was chased by a Chinese maritime surveillance vessel in disputed waters. https://www.inkstonenews.com/politics/once-bitter-rivals-us-...