I don't agree with a lot of the interpretations the author has made, but I posted this because he's a very engaging blogger and it's a good read.
I disagree that this was timed while Bush is still in office, I think the Israeli elections are a far greater influence than the US ones (the current government is facing a tough challenge from a more hawkish candidate) and that the cycle had a lot more to do with the cease fire than (the Israelis reported that the operation had been in planning pretty much the entire duration of the cease fire) either.
Or the whole thing is just a training exercise.