William Broad and David Sanger (April 16, 2016) . Race for Latest Class of Nuclear Arms Threatens to Revive Cold War. The New York Times, http://www.nytimes.com/2016/04/17/science/atom-bomb-nuclear-weapons-hgv-arms-race-russia-china.html?login=email&mtrref=undefined
[excerpted] The United States, Russia and China are now aggressively pursuing a new generation of smaller, less destructive nuclear weapons. The buildups threaten to revive a Cold War-era arms race and unsettle the balance of destructive force among nations that has kept the nuclear peace for more than a half-century.