geneva hollywood actor michael douglas u.n. messenger peace want president barack obama issue strong message nuclear weapons visit hiroshima japan late month douglas tell reporters unite nations geneva nuclear negotiations stick 20 years nuclear danger great cold war largely due huge escalation u.s.-russia tensions increase recklessness close-quarter contact kind crazy tension u.s. russia issue quite see posture help anybody say number weapons trigger alert frighten time somebody possibly make mistake correct short douglas say find religion anti-nuclear cause three mile island nuclear accident 1979 within days open film china syndrome deal emergency nuclear plant stand beside joseph cirincione president ploughshares fund global security organization douglas recall obama 2009 speech prague president promise concrete step ward nuclear-free world think could say disappointment follow hope legacy begin leave office go something strong say hiroshima cirincione say obama make good early progress nuclear non-proliferation make modest cut arsenals leave trillion new nuclear contract pipeline successor every single weapon nuclear arsenal due replacement upgrade loom disaster say douglas 71 say also friend donald trump confident unite state would make advance nuclear disarmament trump presidency guess one strengths weaknesses depend look unpredictability say michael douglas urge obama think legacy hiroshima