The risk of nuclear war is now the greatest it has ever been according to William Perry, US Secretary of Defense twenty years ago and weapons systems manufacturer before that. In a new book released this month, he says that The US and Russian governments have torn up the treaties that helped stabilize the world in the eighties and nineties. The US has supported the eastward expansion of NATO, both nations have built smaller tactical nuclear warheads that fall outside existing nuclear agreements and the USA has withdrawn from the Anti-Ballistic Missile (ABM) Treaty and started deploying weapons along NATOs new eastern border. The result, according to Perry, is that we face the huge risk of a nuclear war that could destroy civilisation.
http://www.nybooks.com/articles/2016/07/14/a-stark-nuclear-warning/
http://fpif.org/may-greater-risk-nuclear-catastrophe-cold-war/