WARSAW, Poland (AP) — 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. The 1997 Anti-Personnel Mine Ban Treaty, also known as the Ottawa Convention, prohibits signatories from keeping or using antipersonnel mines, which can last for years and