France has said it will increase its nuclear weapons arsenal as eight European members of NATO pledge to cooperate more closely with Paris on nuclear weapons, a major shift away from longstanding reliance on the U.

Poland will use antipersonnel as well as anti-tank land mines to defend its eastern border against the growing threat from Russia, Poland's deputy defense minister told The Associated Press on Friday as the country officially left an international convention banning the use of the controversial weapons.

Award-winning journalist Kenneth R. Rosen spoke with Newsweek about his new book, Polar War: Submarines, Spies, and the Struggle for Power in a Melting Arctic, and about Greenland's growing importance in global geopolitics.