Juan
If I read the situation correctly, which is at best a guess on my part, it seems the ball is in Lebanon's court. Israel and Hezbullah are the combatants but Lebanon must make the decision to remove Hezbullah or at the very least try to limit their power base in the south. From what I've read Lebanon doesn't have the means to do so. Even with a 70,000 man army it is so ill equiped and under trained it can do little but occupy and watch. As for NATO entering the south i believe they cannot do so without an invitation from the Lebanese government. Sudan has refused the offer of NATO troops and having NATO force their way in is not only against international law but plays right into the hands of extremist propoganda. So again Lebanon must make the decision, invite NATO, use NATO to train your troops, and get the west to equip your army so they're effective. Lebanon must be able to defend its people from Syria, Iran, Israel and any other entity that does not respect its sovereignty.