The photo is of a sign welcoming nuclear test scientists, which have sprung up around Pyongyang, North Korea. Jean H. Lee, the photographer and Korea bureau chief for the Associated Press, sent the first tweet out of North Korea today. Wireless internet is now available to foreigners, but not locals, courtesy of North Korean mobile services provider Koryolink.
Ryan Broderick is a reporter for BuzzFeed News and is based in London.
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