A week after a sophisticated ambush killed 19 Iraqi soldiers, U.S. and Iraqi commanders are fighting back hard: They are rushing to complete a base for hundreds of Iraqi soldiers here and have warned the local police chief and mayor to cooperate or get out. But the Dec. 3 ambush — the deadliest attack on Iraqi soldiers in months — has proved a rude cautionary tale, indicating just how entrenched the resistance to Iraqi forces is in parts of the country. Full Story