I don’t think this type of disagreement is all that unusual:
The heads of two Israeli intelligence agencies disagree over how much the Israel Defense Forces assault has damaged Hezbollah, although both say the group has been weakened.
The Mossad intelligence agency says Hezbollah will be able to continue fighting at the current level for a long time to come, Mossad head Meir Dagan said.
However, Military Intelligence chief Amos Yadlin disagrees, seeing Hezbollah as having been severely damaged.
I’d like to side with the IDF but the Mossad is right. Airstrikes and limited ground activity may improve the immediate security situation (in time) but they won’t unravel Hezbollah.