Military operations of any size call for massive, intense planning in order to line up intelligence, forces and supplies in a coordinated fashion. This planning usually takes quite a long time to accomplish (on the scale of weeks). Israeli planners have probably drawn up several plans for use against Hezbollah. Top decision makers probably chose the one that best fit their limitations and resources rather than deliberately crafting their strategy for this exact moment. This whole operation probably combines off the cuff improvisation, an old plan, and the most recent intelligence updates into a strategic mish mash that suits most of the participants. Even then, there will be mistakes in the execution of this plan. Finally, Hezbollah has a seat at this table and can (through its actions) dictate Israeli operations to a degree. As such, speculation about the exact motivation for any given target, bombing or whatever is completely pointless without full access to the records of both sides and a thorough analysis only available after the fact.