Bill Clinton is in North Korea, where he will attempt to secure the freedom of two American journalists imprisoned since March, Reuters reports, citing South and North Korean news agencies. "As soon as he arrives, he will be entering negotiations," said a source. The White House and State Department declined comment. Laura Ling and Euna Lee were sentenced in June to 12 years' hard labor. They work for Current TV, co-founded by Clinton's VP, Al Gore.