Of the events of the last week, which one exactly make you ascertain such a claim? The UN post was hit with 4 laser guided bombs dropped by a "highly trained" IAF pilot. You are right on one thing: the UN should have left, they know better then trusting the IAF.
Route 1 to Jerusalem reopened to traffic as fire outside of Jerusalem continues (Haaretz)
from the article: Qana villagers refute IDF claims building fell hours after strike