The Belmont Club: A Knife-Thrower at the Carnival: "Considering the fact that UNIFIL peacekeeping mission was a dead-letter it should naturally be asked why Kofi Annan, as their ultimate commander has seen fit to keep them in a position of danger where their only chance of safety actually depends on accurate targeting by the IDF. Their positions are manifestly so close to the Hezbollah; their convoys so at risk at being confused with mobile Hezbollah forces that only by the grace of God and the accuracy of the IDF have fatalities been avoided until now. They were willing to take the risk. Annan was willing to make the hay. You be the judge of Kofi Annan's competence both in the care of his men and with respect to the accusation he has made against the IDF."
[Update&bump: The fact that Hizb'allah has been staying real close to the UNIFIL forces in general came up in the comments. Rick Ballard provided the image I've now added to show just how close Hizb'allah is to UNIFIL.]
[Further update: from Anti-Mullah: "United Nations & Hezbollah flags flying side by side at the Lebanese Observation post where four UN "observers" from Ghana were reportedly killed by someone." Emphasis is mine, and I don't know how much stock to put in it (a site named "Anti-Mullah" would seem to have a certain viewpoint from the start.) If confirmed, it would seem very informative.]