Several international aid organizations have sharply criticized the failure of the United Nations to demand a halt to fighting in Gaza. “We are appalled at the failure of the UN Security Council to authorize a resolution demanding a humanitarian ceasefire and unconditional release of hostages held in Gaza,” seven major aid groups said in a joint statement on Saturday. “If implemented, this would have provided much needed respite for civilians in Gaza who are under constant bombardment. This was a missed opportunity to stop the violence.” The groups include Save the Children, Action Against Hun…