Easy to criticize when you don't have all the facts. IAF needs to monitor and absolutely destroy any potential threats. Yes, IAF are invading sovereign land and that is not conventional at all - to deny that is arrogant. But, neither is the situation in Syria conventional. If these invasive measures save lives, without risking Lebanese lives (this is critical) - surely it is worth it?
Kuwait backs alliances against Islamic State, but no troops (Reuters)
from the article: Lebanon Army: Israeli fighter planes penetrated Lebanese air space