The United Nations warns that up to one million people are trapped in Libya and are in need of emergency aid as fighting intensifies between supporters of Col. Muammar Gaddafi and anti-government rebels. Earlier today, Gaddafi’s forces launched at least four air strikes against rebel-held areas in the oil town of Ras Lanuf. Gaddafi’s forces have also launched a fresh artillery bombardment on the western town of Zawiyah.