A great concept and wonderfully investigated show. But I'm really frustrated at season 5 which claims to explore how America deluded itself into going to war in Iraq but not once looks at the many countries who knew this was bogus and tried to avert it. So much talk about Colin Powell's UN speech but not one mention of Dominique de Villepin's UN speech ! Why did the truth just not get through? There would be a lot to learn from that.