America and North Korea are, well more of less. The U.S. is an ally of South Korea.
North Korea
Communist NORTH Korea's enemies are mostly non-communist countries.
Citizens of the United States view China, North Korea, Korea, and Iran as their greatest enemies.
1) The US and Russia are for the most part no longer "enemies". 2) North Korea is very likely to use any possible nuclear technology against South Korea, which is a US ally; I don't think Russia wants to attack South Korea. 3) As I said earlier, Russia is not likely to attack the US, North Korea is.
korea and japan
China
korea
i don't think Australia has enemies except for maybe the falklands and North Korea (who is mad at everybody)
There are several countries which are seen as an enemy of the US. The list includes China, North Korea, Iran, Russia, Iraq, Afghanistan, Syria, and Pakistan.
North Korea
the places that are Canadas enemies are the u.s.a, north Korea and all the other countries that Canada does not trade with
Korea was settled and founded by Chinese from start. As a part of China, Korea gave tribute to mainland China and they protected Korea from enemies.