U.S. Sen. Rand Paul, R-Ky., is calling for sanctions against Libya in reaction to the killing of four American diplomats, including Ambassador Chris Stevens. From Paul's office: "I am heartbroken and outraged by the murder of four U.S. citizens, including Ambassador Chris Stevens, during the attack on the U.S. Consulate in Benghazi. My thoughts and prayers are with the families of those who lost loved ones in this tragedy. The perpetrators of this senseless attack must be brought to justice. I, therefore, demand that until the Libyan police hand over suspects to U.S officials, any U.S. foreign aid to the government of Libya be contingent on their full support in this matter."During a press conference at the White House, President Obama condemned the killings and pledged to bring those responsible to justice."We will not waver in our commitment to see that justice will be done," said Mr. Obama. "Make no mistake, justice will be done."