[ inhales, exhales ] [ announcer ] cigarettes are not just dangerous when they're smoked. [ rat squeaking ] they're dangerous long after. cigarette butts are toxic. they release chemicals that poison our water... and harm wildlife. and millions... are polluting our environment. [ sniffing ] [ seagulls squawking ] the horrors of assad's war on his own people, joining to discuss is richard haass, the author of "a world in disarray."