[custom_adv] North Korea, officially the Democratic People's Republic of Korea, is a country in East Asia constituting the northern part of the Korean Peninsula. Pyongyang is the nation's capital and largest city. To the north and northwest, the country is bordered by China and by Russia along the Amnok (known as the Yalu in China) and Tumen rivers;it is bordered to the south by South Korea, with the heavily fortified Korean Demilitarized Zone (DMZ) separating the two. Nevertheless, North Korea, like its southern counterpart, claims to be the legitimate government of the entire peninsula. [custom_adv] In 1910, Korea was annexed by Japan. After the Japanese surrender at the end of World War II in 1945, Korea was divided into two zones, with the north occupied by the Soviets and the south occupied by the Americans. [custom_adv] Negotiations on reunification failed, and in 1948, separate governments were formed: the socialist Democratic People's Republic of Korea in the north, and the capitalist Republic of Korea in the south. An invasion initiated by North Korea led to the Korean War (1950–1953). The Korean Armistice Agreement brought about a ceasefire, but no peace treaty was signed. [custom_adv] Negotiations on reunification failed, and in 1948, separate governments were formed: the socialist Democratic People's Republic of Korea in the north, and the capitalist Republic of Korea in the south. An invasion initiated by North Korea led to the Korean War (1950–1953). The Korean Armistice Agreement brought about a ceasefire, but no peace treaty was signed. [custom_adv] Negotiations on reunification failed, and in 1948, separate governments were formed: the socialist Democratic People's Republic of Korea in the north, and the capitalist Republic of Korea in the south. An invasion initiated by North Korea led to the Korean War (1950–1953). The Korean Armistice Agreement brought about a ceasefire, but no peace treaty was signed. [custom_adv] Negotiations on reunification failed, and in 1948, separate governments were formed: the socialist Democratic People's Republic of Korea in the north, and the capitalist Republic of Korea in the south. An invasion initiated by North Korea led to the Korean War (1950–1953). The Korean Armistice Agreement brought about a ceasefire, but no peace treaty was signed. [custom_adv] It is the country with the highest number of military and paramilitary personnel, with a total of 9,495,000 active, reserve and paramilitary personnel. Its active duty army of 1.21 million is the fourth largest in the world, after China, the United States and India. It possesses nuclear weapons. [custom_adv] North Korea is an atheist state with no official religion, and public religion is discouraged. Both North Korea and South Korea became members of the United Nations in 1991. [custom_adv] International organizations have assessed that human rights violations in North Korea have no parallel in the contemporary world. North Korea operates re-education and prison camps, akin to the gulag prisons of the Soviet Union. [custom_adv] The concentration camps are used to segregate those seen as enemies of the state and punish them for alleged political misdemeanours or alleged misdemeanours of relatives as part of the "3 generations of punishment" policy instigated by state founder Kim Il-Sung. Prisoners are frequently subject to slave labour, malnutrition, torture, human experimentation, rape and arbitrary executions.