Perry de Havilland explains that when conflict first broke out between Israel and Hezbollah he thought it very important that Israel be careful not to destablize the fledgling liberty movement in Lebanon. Now, he feels somewhat differently:
In short, I find myself inescapably drawn to the notion that not only is the Israeli action warranted, I now think there is no good reason the IDF should avoid attacking targets of strategic value to Hezbollah which are located in non-Hezbollah areas. Moreover, I would urge them to follow the logic of that position and start striking targets in Syria and (above all) in Iran in order to impose a cost on those governments for their actions in enabling Hezbollah.
His reasoning is very interesting.