the US fears Korea because of their power and weapons
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To be more specific, North Korea is feared because they have a military with powerful enough weapons to pose a threat to any nation on the planet, and are desperate enough to be unpredictable.
Their only real ally of significance is China, and their indoctrination of their citizens can only last so long, meaning they're backed into a bit of a corner and no one knows what they'll do.
No. The US leads the world in enforcing sanctions against North Korea.
North Korea attacked South Korea.
No North Korea is a humanitarian nightmare.
Yes North Korea does not like the US mainly because of the country's involvement in the Korean War between North and South Korea.
Yes the US is known as the American Empire to North Korea.
The US is not permitted to patrol North Korea, nor do they. The US military does however have military bases in south Korea as part of a treaty to protect them against a possible attack by North Korea.
The US was part of a United Nations force fighting North Korea and its allies.
When North Korea asked for help from China, South Korea asked for the US's help, so they broke down the bridge between China and North Korea and sent reinforcements to South Korea
The US never declared war on North Korea. The Korean War was between the United Nations and North Korea, (assisted by Russia and China).
us is bettter:)
South Korea welcomed us, North Korea fought us.
The US isn't really doing anything in North Korea at this time. There are no formal diplomatic relations between the two countries; North Korea is still technically at war with the US and South Korea (although the US never actually declared war on North Korea). North Korea is notorious for its desire to keep foreigners out, and its borders are well guarded. North Korea also refuses to accept trade or even foreign aid from the US. However, North Korea has a large military and nuclear weapons, and their friend and neighbor China is very powerful, so the US does not have the option of militarily attacking North Korea. So there really isn't much going on between the two countries, except occasional threats or small scale military actions. Hatred of the US and its allies is a major propaganda that the North Korean military uses to keep itself in power, which is why you often hear about North Korea threatening the US, South Korea and Japan.