The most important part of this video starts at 54 seconds in (partial transcript below):
If the United States continues to be bogged down in a protracted bloody involvement in Iraq, the final destination on this downhill track is likely to be a head-on conflict with Iran and with much of the world of Islam at large. A plausible scenario for a military collision with Iran involves Iraqi failure to meet the benchmarks; followed by accusations of Iranian responsibility for the failure; then by some provocation in Iraq or a terrorist act in the U.S. blamed on Iran; culminating in a "defensive" U.S. military action against Iran that plunges a lonely America into a spreading and deepening quagmire eventually ranging across Iraq, Iran, Afghanistan, and Pakistan.
He's talking about something like the Gulf of Tonkin incident, Operation Northwoods, or even 9/11--flimsy pretexts at best and false-flag operations at worst--but this time we "do" Iran. And Republicans and even a lot of Democrats will come out to tell us exactly what happened even though it won't be quite clear just what went down. The official story/conventional wisdom about evil, aggressive Iran attacking the poor, well-meaning United States will harden into stone and be pumped 24 hours a day through every possible medium, making anyone questioning what happened seem disloyal, unpatriotic, treasonous, insane, or all of those.
However, it will then come out in 20 or 30 years, just like in the Gulf of Tonkin incident, that, well, what do you know--they played the public for suckers and got a lot of people killed and it turns out that the pretext the whole thing was based on didn't even happen or didn't happen at all like they said it did. When will we learn?