The North Korean government presented the United States with a bill for $2 million for the hospital care of Otto Warmbier, the American college student who was held as a prisoner by Pyongyang, and insisted the US sign a pledge to pay the bill before releasing him from their custody in 2017, according to two sources familiar with the matter.


원문출처 : https://www.cnn.com/2019/04/25/politics/otto-warmbier-north-korea-comatose-bill/index.html