at the time the focus was on the aftermath of the yingluck shinawatra. in 2012 in the middle of what was a full blown civil war. there was accusations of human rights abuses. it brought this warping. >> we started to sea a bunch of chemical weapons moving around. a year later, president obama said he had proof chemical weapons had been used. he tried to build support. it didn't work. >> the united states came off two major wars. there was little appetite for a third. inside syria, armed groups waged war for their own end. i.s.i.l. formed in the aftermath of iraq was there, operating in sunni areas. then it was on to northern iraq where u.s. trained iraqi troops dropped their gun and ran. when i.s.i.l. fighters came within 40km of the capital, the u.s. air war began. >> it was the beheading on camera of the journalist that got the public's attention. >> the beheadings of journalists had an affect and there's no question it had an affect. that and the strategic element, that can't be overlooked as well. the idea that this - here is a country, iraq where th