I just broke off writing for a couple of minutes to take a call from Chris Gunness, who is the spokesman for Unrwa, the UN agency that looks after Palestinian refugees.
He was ringing to say that Unrwa wanted an investigation into whether Israel has committed war crimes in the Gaza Strip. Civilians are protected by the laws of war.
I have known Chris for years, as he used to be a BBC foreign correspondent.
Interesting, isn't it? The fellow from UNRWA used to be a fellow from the BBC. Two organizations with very little goodwill towards Israel, with interchangeable personnel.