When President Obama made Susan Rice his ambassador to the United Nations, in 2009, he thought the job was so vital that he gave her cabinet rank. Now, here we are, with the Arab world in tumult, two dictators gone in the past two months, and the UN aflutter over scenes of Libyans dying this past week by the hundreds, or thousands, in outright rebellion against a raving Moammar Qaddafi — who has been vowing to “fight to the last drop of blood.” Qaddafi’s atrocities are so visibly horrific that the UN Security Council has been meeting on Libya in...