Putin boasts of new Russian nuclear weapons

President Vladimir Putin says Russia has tested new nuclear weapons, including a nuclear-powered cruise missile and a nuclear-powered underwater drone, that would be immune to enemy intercept.Speaking in a state-of-the-nation speech Thursday, Putin said that the nuclear-powered cruise missile tested last fall has an unlimited range and high speed and is capable of penetrating any missile defense.He said the high-speed underwater drone capable of carrying a nuclear warhead could target both aircr