U.S. forces used bombs, mortars and artillery to try to break guerrilla resistance in Iraq on Tuesday while President Bush and his secretary of state sought help in Europe for their troubled campaign. The U.S. military said it had new information one of Saddam Hussein’s most feared lieutenants was involved in some of the attacks that have killed at least 177 U.S. soldiers since the official end of major combat in Iraq on May 1. U.S. troops have responded to an escalation in the insurgency against them by deploying in the anti-American heartlands to the north and west of Baghdad heavy and high-tech weaponry rarely used since Saddam’s ouster in April. Faced with growing criticism at home of the invasion and occupation, Bush was due to lean on his closest ally, British Prime Minister Tony Blair, on a state visit to London. Full Story