7. North Korea The North Korean People's Army was established in 1939 and has an impressive force of more than one million soldiers. When reserve unit numbers are counted in this total, estimates are more than seven million soldiers who could be activated if needed.
Major conflicts in North Korea's history are the Korean War and the Vietnam War. Tensions between North and South Korea still exist today and, technically, the conflict has not officially ended between the two.
North Korea has confirmed its nuclear and chemical weapons capability in recent years with threats against various countries including the United States, mainly for its alliance with South Korea.