With an eye on Russia, U.S. to increase nuclear capabilities

Concerned about Russia'sgrowing tactical nuclear weapons, the United States will expandits nuclear capabilities, a policy document released on Fridaysaid, a move some critics say could increase the risk ofmiscalculation between the two countries.It represents the latest sign of hardening resolve byPresident Donald Trump's administration to address challengesfrom Russia, at the same time he is pushing for improved tieswith Moscow to rein in a nuclear North Korea.The focus on Russia is in line wit