Sailfish, your history is a bit incorrect.  The US and Russia (USSR) did not create North and South Korea.  When WW II ended, Korea was divided along the 38th parallel for the purpose of accepting the surrender of Japanese forces and to establish temporary military governments until Korea was administered under an international trusteeship or achieved independence.  In 1948, the USSR refused to participate in an United Nations supervised peninsula-wide democratic elections for a new government for all of Korea and instead installed a Communist regime in the north and created the Democratic People’s Republic of Korea (North Korea).  Thus, it was Russia (USSR) that created North Korea all by itself.