What happened
Operation Grapes of Wrath was a 16-day campaign of airstrikes and shelling launched in response to Hezbollah rocket fire into northern Israel, and the Qana compound had been used as a UN base in southern Lebanon for years — its location was known to Israeli forces operating in the area. The UN's technical investigation into the shelling examined the pattern, sequencing, and accuracy of the artillery fire that struck the compound and concluded the precision and repetition involved made a pure accident unlikely, without going so far as to assert the killing of civilians was the deliberate objective rather than, for instance, a strike aimed at a nearby target that went badly wrong or reflected reckless disregard for the known presence of sheltering civilians.
Israel's own inquiry maintained the shelling was a mistake resulting from a malfunctioning fire-control system, and no Israeli officer was prosecuted. The disparity between Israel's internal account and the UN's independent technical findings — never fully reconciled — is why this entry states both positions rather than asserting Israel's intent with more certainty than the evidence supports; what is not disputed is the death toll, the civilian status of nearly everyone killed, and that the UN's own investigators, reviewing the same operational data Israel had access to, did not accept the accident explanation.