FILE - In this March 28, 2013 file photo, Joint Chiefs Chairman Gen. Martin Dempsey gestures while speaking during a news conference at the Pentagon. The top U.S. military official says

 

              FILE - In this March 28, 2013 file photo, Joint Chiefs Chairman Gen. Martin Dempsey gestures while speaking during a news conference at the Pentagon. The top U.S. military official says
FILE - In this March 28, 2013 file photo, Joint Chiefs Chairman Gen. Martin Dempsey gestures while speaking during a news conference at the Pentagon. The top U.S. military official says North Korea’s bellicose rhetoric, including threats to attack the United States, follows its decades-long pattern of provocation followed by non-violent accommodation. Dempsey said Friday the situation is worrisome, given the stakes. But he suggested that it does not appear to point toward war. (AP Photo/Jacquelyn Martin, File)