An Israeli private organization should file a claim at that oh-so-famous international court in the Hague over this. Sure it’ll be tossed out, but it’ll generate press, force Turkey on the defensive... and make the Euro-peons squirm so much that they could conceiveably re-write the court’s mission to eliminate the possibility of private organizations filing claims with them for a political agenda (read: Islamic jihadists bent on destroying Israel).
It is suicidal for Israel to recognize, even indirectly, the authority of any phony “court” or any phony “international law”.