I think assuming that the American public has an aversion to war is a dangerous one. Remember that full transparency is a double edged sword. One the one hand people learn about the innocent loss of life, on the other, people may learn just how dangerous and determined the forces against "us" are. That could very well result in a cause to action.
We invaded two nations that presumably had nothing to do with 9/11 over 9/11. Take a moment to think about the potential ramifications of a population that is fully aware of the extent powerful movements within Iran, China, Russia, Vemezuela, Pakistan and a host of other countries go to undermine our national security and economic stability. In case you didnt know, the US is already fighting covert wars on all of those fronts (you can google around for articles on this stuff, they come out all the time)