According to that theory USA, British, Australian, etc ,etc should have been investigated a long time ago. According to a single operation (not including all the war - by the way except USA no country was attacked) - Death tall in Falujaa Iraq when going against less equipped militants hiding among a much smaller population was 6000 civilians + 1200 militants - extrapolatingh to Gaza then 30,000 civilians would have died if the above armies were doing the work instead of the IDF. How come not an issue??? - In Yugoslavia NATO bombing killed over 1500 civilians - no country involved was attacked, no UN approval, contrary to NATO charter - by they way Goldstone on that said no need to investigate ('acceptable numbers' to paraphrase his words - also hitting civilian TV station and 16 civilians was deemed legitimate), etc - plus more then 2 dozens other conflicts - e.g. Lebanese army killing 65% civilians vs militants 2007 refuge camp in Lebanon + heavy shelling of camp.
Judge orders Jerusalem Gay Pride attacker to undergo psychiatric evaluation (Haaretz)
from the article: Goldstone tells Obama: Show me flaws in Gaza report