What the last two reviews have failed to grasp is that in terms of American political comedy this is almost alone!
In places you could say that this film is slightly far-fetched, but wait... no, you can't! The spin that we see come out of this country let alone the number one country for media-savvy!
The amazing thing about this film is the premonition that DeNiro's character makes at one point whilst riding in a limo about 'America's next war'. If you want an idea of a worst case scenario for the background operations of an American administration this is the film for you.
I would say that the only thing that could be perceived as being 'unfunny' is the idea that this could be what has happened with the "War on Terror". Watch this film, know what could be happening in "the land of the free".