Of course they undermine the prime minister, they give legitimacy to hezbollah by making israel seem as the "bad guy" to the lebanese people. I mean when i went to school there they used to scare us with sonic booms virtually every day, whats the point really?
I would think that seeing foreigners bringing all kinds of weaponery into the country to wage war on a neighbor, making my children a shield, and taking over my govt. would be more frightning than a few sonic booms.