The North Korean national flag flutters at half mast at the North Korea embassy in Singapore on December 20, 2011. North Korean leader Kim Jong-Il has died aged 69 of a heart attack, state media announced, plunging the nuclear-armed and deeply isolated nation into a second dynastic succession. AFP PHOTO / SIMIN WANG (Photo credit should read SIMIN WANG/AFP/Getty Images)
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Why does North Korea detain some US citizens?
North Korea has detained a number of US citizens in recent years. CNN's Ivan Watson looks at why.
01:17 - Source: CNN
Ex-North Korea detainee Otto Warmbier 14 videos
The North Korean national flag flutters at half mast at the North Korea embassy in Singapore on December 20, 2011. North Korean leader Kim Jong-Il has died aged 69 of a heart attack, state media announced, plunging the nuclear-armed and deeply isolated nation into a second dynastic succession. AFP PHOTO / SIMIN WANG (Photo credit should read SIMIN WANG/AFP/Getty Images)
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Why does North Korea detain some US citizens?
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See Warmbier's high school graduation speech
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Former North Korea detainee Otto Warmbier dies
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North Korea arrested University of Virginia student and Wyoming, Ohio high school graduate Otto Frederick Warmbier in early January for allegedly carrying out "a hostile act against the DPRK," referring to the acronym for the Democratic People's Republic of North Korea
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Otto Warmbier dead, family confirms
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Otto Warmbier, a student who has been imprisoned by North Korea, was set free
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An American college student detained for two months in North Korea gave an emotional press conference Monday. June 13, 2017; Cincinnati, OH, USA; Otto Warmbier, a 22-year-old college student detained and imprisoned in North Korea is carried off of an airplane at Lunken Airport in Cincinnati. Warmbier has reportedly been in a coma for the past 15 months. Mandatory credit: Sam Greene/The Enquirer via USA TODAY NETWORK *** Please Use Credit from Credit Field **
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Questions surround Warmbier's injuries
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Video shows Warmbier carried off plane
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Fred Warmbier: We don't believe North Korea
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North Korea arrested University of Virginia student and Wyoming, Ohio high school graduate Otto Frederick Warmbier in early January for allegedly carrying out "a hostile act against the DPRK," referring to the acronym for the Democratic People's Republic of North Korea
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Student freed from North Korea lands in US
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Otto Warmbier, a student who has been imprisoned by North Korea, was set free
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Student released by North Korea is in a coma
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Trump: Talented team got Otto Warmbier home
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US student held in North Korea 'confesses'
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