"It looks much more like revenge than a rational military reaction," he said. Military experts had advised him that "if it's about taking out the leadership of Hamas it could have been done with much fewer civilian casualties," Lykketoft added. Israel has killed approximately 19,700 people in Gaza, most of them children and women (according to UN-cited figures), in the past 10 weeks. Hamas, the Palestinian group which rules Gaza, killed some 1,200 Israelis and took around 240 hostages on 7 October.