US President Barack Obama (R) gives the floor to Japan's Prime Minister Yoshihiko Noda to speak during a joint press conference at the White House. Barack Obama on Monday warned North Korea that its ... more 

US President Barack Obama (R) gives the floor to Japan's Prime Minister Yoshihiko Noda to speak during a joint press conference at the White House. Barack Obama on Monday warned North Korea that its "old pattern of provocation" was over and that the United States would not buy "good behavior" from the communist state less