North Korea
"North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia, in the northern part of the Korean Peninsula. ... The capital and largest city is Pyongyang. North Korea shares a land border with China to the north and north-west, along the Amnok (Yalu) and Tumen rivers. A small section of the Tumen River also forms North Korea's short border with Russia to the northeast. The Korean Demilitarized Zone marks the boundary between North Korea and South Korea." [North Korea. Wikipedia]