 I'm Ben Thomas with an AP News Minute. Hamas warns that Israel's expanding military operations in Gaza City could have disastrous repercussions for cease-fire talks. Charles de la Desma has more. CHARLES DE LA DESMA, Israeli forces advanced deeper into the Gaza Strip's largest city in pursuit of militants who had regrouped there, sending thousands of Palestinians fleeing from an area ravaged in the early weeks of the nine-month-long war. Residents have reported artillery and tank fire.