North Korean students work at computer terminals inside a computer lab at Kim Il Sung University in Pyongyang, North Korea on Tuesday, Jan. 8, 2013 during a tour by Executive Chairman of Google, Eric Schmidt. Schmidt is the highest-profile U.S. executive to visit North Korea - a country with notoriously restrictive online policies - since young leader Kim Jong Un took power a year ago. (AP Photo/David Guttenfelder)

Associated Press
North Korean students work at computer terminals inside a computer lab at Kim Il Sung University in Pyongyang, North Korea on Tuesday, Jan. 8, 2013 during a tour by Executive Chairman of Google, Eric Schmidt. Schmidt is the highest-profile U.S. executive to visit North Korea - a country with notoriously restrictive online policies - since young leader Kim Jong Un took power a year ago. (AP Photo/David Guttenfelder)
North Korean students work at computer terminals inside a computer lab at Kim Il Sung University in Pyongyang, North Korea on Tuesday, Jan. 8, 2013 during a tour by Executive Chairman of Google, Eric Schmidt. Schmidt is the highest-profile U.S. executive to visit North Korea - a country with notoriously restrictive online policies - since young leader Kim Jong Un took power a year ago. (AP Photo/David Guttenfelder)
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