The news this morning says Israeli forces shelled the UNRWA headquarters in Gaza city.
My first thought was to see if this could be used as a way of measuring the error rate of Israeli attacks. Their stock in trade here has been accuracy. There's always an error rate--perhaps we can estimate use the number of high-profile sites in Gaza City, together with the number of high-profile non-militarized targets, to estimate the failure rate. I supposed that information might be available with a little searching: maybe GoogeMap for the former?
But then it occurred to me: this was the UNRWA headquarters. Given the UNRWA's track record in the area, maybe this was a warning shot. It set two buildings on fire but didn't kill anybody--luck or targetting?