The U.S. : 
Has 900 military bases across the globe, bombed 7 countries in 2016. U.S. dropped an estimated 26,172 bombs in Iraq, Libya, Somalia, Syria, Yemen, Pakistan and Afghanistan  (https://www.cfr.org/blog/how-many-bombs-did-united-states-drop-2016.)
North Korea: 
0 military bases across globe, bombed 0 countries in 2016
Also:
U.S. warships are off the Korean Peninsula, U.S. stealth aircraft and bombers are flying over the Korean Peninsula.
No Korean ships or aircraft are anywhere near the U.S.
Yet you see N. Korea as the threatening, belligerent party.
You need to check your glasses.