Israel Vows No Let-Up Over Gaza

Israeli Defense Minister Ehud Barak says Hamas had sustained a "hard blow," but the offensive in Gaza will continue.

Israel carried out 30 air strikes, with heavy clashes reported east of Gaza City over the past 10 days.

Plus: Envoys race to halt Gaza violence with separate missions being led by French president Sarkozy, and a high-level team from the E.U.