Olmert: politically shrewd?

Israeli Prime Minister Ehud Olmert has been heartily criticized by many of his countrymen (both on the left and the right) and by many Americans (yours truly included) for signing onto this stupid U.N. cease-fire "agreement" with Hezbollah. Jason at Texas Rainmaker has a theory:

And despite all the criticism Israeli Prime Minister Ehud Olmert has taken on signing the bogus U.N. peace deal, today’s actions by Hezbollah prove just what Olmert was likely trying to show the world… that no matter how much you give in to terrorists and no matter how much good faith you offer,for example, in authorizing a cease-fire… terrorists will always be terrorists incapable of acting civilized and unworthy of negotiation.

In other words, perhaps Olmert calculated that the Hezbos would do exactly what they're doing now, which is ignoring the terms of the "agreement." That way, once Israel resumes levelling the Hezbos, Olmert can claim "Hey, we tried to be nice and look where it got us!"

Interesting theory. Thoughts?