Disputes - international:
risking arrest, imprisonment, and deportation, tens of thousands of North Koreans cross into China to escape famine, economic privation, and political oppression; North Korea and China dispute the sovereignty of certain islands in Yalu and Tumen Rivers; Military Demarcation Line within the 4-km-wide Demilitarized Zone has separated North from South Korea since 1953; periodic incidents in the Yellow Sea with South Korea which claims the Northern Limiting Line as a maritime boundary; North Korea supports South Korea in rejecting Japan's claim to Liancourt Rocks (Tok-do/Take-shima)

Refugees and internally displaced persons:
IDPs: undetermined (periodic flooding and famine during mid-1990s) (2017)

Trafficking in persons:
current situation: North Korea is a source country for men, women, and children who are subjected to forced labor and sex trafficking; many North Korean workers recruited to work abroad under bilateral contracts with foreign governments, most often Russia and China, are subjected to forced labor and do not have a choice in the work the government assigns them, are not free to change jobs, and face government reprisals if they try to escape or complain to outsiders; tens of thousands of North Koreans, including children, held in prison camps are subjected to forced labor, including logging, mining, and farming; many North Korean women and girls, lured by promises of food, jobs, and freedom, have migrated to China illegally to escape poor social and economic conditions only to be forced into prostitution, domestic service, or agricultural work through forced marriages
tier rating: Tier 3 - North Korea does not fully comply with minimum standards for the elimination of trafficking and is not making significant efforts to do so; the government continued to participate in human trafficking through its use of domestic forced labor camps and the provision of forced labor to foreign governments through bilateral contracts; officials did not demonstrate any efforts to address human trafficking through prosecution, protection, or prevention measures; no known investigations, prosecutions, or convictions of trafficking offenders or officials complicit in trafficking-related offenses were conducted; the government also made no efforts to identify or protect trafficking victims and did not permit NGOs to assist victims (2015)

Illicit drugs:
at present there is insufficient information to determine the current level of involvement of government officials in the production or trafficking of illicit drugs, but for years, from the 1970s into the 2000s, citizens of the Democratic People's Republic of (North) Korea (DPRK), many of them diplomatic employees of the government, were apprehended abroad while trafficking in narcotics; police investigations in Taiwan and Japan in recent years have linked North Korea to large illicit shipments of heroin and methamphetamine