North Korean leader Kim Jong-un has reportedly undergone cardiovascular surgery. According to Daily NK's source in North Korea, Kim is currently recovering at his residence in Pyeonganbuk-do Province… after receiving surgery on April 12th. There had been speculation that Kim Jong-un might have health issues...as he did not appear on North Korean founder Kim Il-sung's birthday... for the first time since he came to power. But, the North's official Korea Central News Agency reported on Monday that Kim has sent a birthday message to the Cuban President, implying that Kim is carrying out his duties as usual.