Obama says Kim Jong Un is following familiar pattern of provocation . The U.S. president also said he would not allow North Korea to develop a nuclear weapon and that the United States will take military action if necessary. The North may make more provocative moves in the coming weeks , he warns . CNN 's full coverage on North Korea . North Korea has dismissed the idea of talks with the U.S. as `` a crafty ploy ''
Obama says Kim Jong Un is following familiar pattern of provocation . The U.S. president also said he would not allow North Korea to develop a nuclear weapon and that the United States will take military action if necessary. The North may make more provocative moves in the coming weeks , he warns . North Korea has dismissed the idea of talks with the U.S. as `` a crafty ploy ''