U.S. troops are preparing for a confrontation with one of the 
            divisions of the Republican Guard near the Shiite Muslim holy city 
            of Karbala, some 60 miles from Baghdad, U.S. officials told ABCNEWS' 
            John McWethy. The battle, sources said, could be imminent.
             A line of Republican Guard divisions stretches from Karbala to 
            the city of Al Kut, forming a wall between coalition forces and 
            Baghdad, Pentagon officials said. The Army's 3rd Infantry Division  
            which is 50 miles from Baghdad  is preparing for a confrontation as 
            well.
             According to ABCNEWS' Ted Koppel, who is embedded with the unit, 
            intelligence reports indicate that perhaps as many as 1,000 Iraqi 
            troops may be coming down the Euphrates River on boats and the 3rd 
            Infantry Division is expecting an attack. Thirty-two Apache Longbow 
            helicopters are said to be nearby and ready to provide air support.
             Sources also said the 101st Airborne Division and its Apache 
            helicopters were moving to a secret location deep within Iraq so it 
            could participate in the ultimate battle for Baghdad. If another 
            large U.S. force is needed, the 4th Infantry Division would be 
            summoned. Officials said those troops are on the way to Kuwait but 
            would not be fully ready for battle for at least a month. 
             Skies Clear; Fighting to Increase
             As Marines and Army units moved forward, they continued to face 
            scattered attacks, U.S. officials said, as part of Saddam's strategy 
            to stop coalition momentum toward the capital. The blinding 
            sandstorms that had hindered progress cleared up and paved the way 
            for the resumption of air-support missions.
             About 100 miles south of the capital, the 5th Marine 
            Expeditionary Force used mortars to attack Iraqi holdouts who had 
            been firing at Marine units moving north, reported ABCNEWS' Bob 
            Woodruff, who is embedded with the force. With air power back up, 
            the Marines have been able to move much more quickly, he said. 
             And near Al Kut, southeast of Baghdad, the 1st Marine Division 
            came under Iraqi artillery, mortar and small-arms fire, and was 
            forced to turn back and use a different route, said ABCNEWS' Mike 
            Cerre, who is with the unit. 
             
            
              
              
                   Update 7 p.m. ET: Coalition forces parachuted 
                  into northeastern Iraq and continue toward Baghdad from the 
                  south. (ABCNEWS.com)
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             Continued Attacks in the South
             In an area east of the town of Najaf, the 5th Armored Corps was 
            attacked by "vehicle-mounted irregulars," Central Command spokesman 
            Brig. Gen. Vincent Brooks said today. He said coalition forces 
            defeated the attack with no casualties. 
             Intense fighting also continued in and around the town of 
            Nasiriyah, where about 30 Marines were injured by friendly fire, 
            ABCNEWS' John Berman reported. The Marines had spread out throughout 
            the city and set up defensive strongholds. They had adopted a new 
            approach toward handling surrenders since several troops were 
            wounded in the town Sunday during a phony surrender.
             "The policy right now is to question almost everyone who comes 
            close to the Marines," Berman said. "Most civilians are let go but 
            several hundred prisoners have been taken."
             The Baath Party intelligence headquarters that the Marines 
            overtook in the city Wednesday has yielded information that could be 
            useful to U.S. troops: a terrain model, a detailed map of the city 
            and boxes of American ammunition. The Marines, Berman reported, 
            think the boxes of ammunition might have been taken from an Army 
            convoy that Iraqis seized Sunday.
             Efforts to establish a U.S. air base in southern Iraq have met 
            with stubborn resistance from Iraqi fighters. An Air Force convoy to 
            the facility was stalled by heavy gunfire, mines and booby traps, 
            and planes coming in to the base were taking a lot of surface-to-air 
            fire.
             In southern Iraq, British forces continued to face "stiff 
            opposition" from Iraqi paramilitaries and regular forces in and 
            around Basra, British Air Marshal Bryan Burridge told reporters at 
            Central Command in Doha, Qatar. 
             One soldier said their goal was to oust the regime in Basra and 
            hope the rest of the city would fall afterwards.
             "The aim of this operation was to try and take out the leadership 
            and so if the brain of the operation is gone, the other parts of it 
            may crumble," said Maj. Johnny Bawron of the 7th Armored Brigade.
             British commanders said they had struck a convoy of Iraqi units 
            traveling south from Basra, destroying 19 tanks. The units were 
            believed to be heading southeast from Basra toward the Al Faw 
            Peninsula.
             The paramilitaries, who are loyal to Saddam, were rounding up the 
            regular troops and forcing them to fight, sometimes by holding guns 
            to the heads of their family members, Burridge said. 
             In the Persian Gulf, allied minesweepers worked to expand a newly 
            cleared channel to the port of Umm Qasr for shipments of aid. The 
            British ship Sir Galahad was waiting offshore with 200 tons 
            of food, medicine and water for Iraqi civilians in Basra and 
            elsewhere. 
             Two humanitarian convoys reached the southern cities of Safwan 
            and Umm Qasr with food and water, U.S. officials said today.
             
             
  
            
             New Explosions Rock Baghdad
             As the fighting continued south of Baghdad, explosions rocked the 
            Iraqi capital late tonight. Large billows of smoke and fire rose 
            above the city. There were reports that buildings close to the Old 
            Palace compound near central Baghdad were hit by airstrikes.
             Iraqi Information Minister Mohammed Saeed al-Sahaf was talking to 
            Abu Dhabi television from the roof of a building in Baghdad when he 
            heard the explosions. He moved away and said, "Can you hear this? 
 
            This is not frightening anybody." Al-Sahaf said a smoking building 
            that was being shown on Abu Dhabi TV had been struck by coalition 
            forces for a fourth time.
             Iraq's defense minister, Sultan Hashim Ahmed, told a news 
            conference that Iraqi troops were prepared and that a battle for 
            Baghdad would be decided in house-to-house combat within the city. 
             "We set up our [main] defenses in Baghdad. It will be no surprise 
            that in five to 10 days they will be able to encircle all our 
            positions in Baghdad. They have the capability to do so," Ahmed 
            said. "The enemy must come inside Baghdad, and that will be its 
            grave. We feel that this war must be prolonged so the enemy pays a 
            high price."
             The tension between Iraq and the United States also extended to 
            the United Nations today. U.S. Ambassador John Negroponte walked out 
            during a speech by the Iraqi U.N. Ambassador Mohammed Al-Douri, who 
            accused the United States of trying to exterminate Iraqis. 
             "I did sit through quite a long part of what he had to say, but 
            I'd heard enough," Negroponte said. 
             Iraqi Retreat in the North
             Iraqi forces began withdrawing from positions on the edge of the 
            Kurdish enclave in northern Iraq after Kurdish fighters pushed 
            beyond their territory into Iraq, and American paratroopers landed 
            in the region. 
             ABCNEWS' Charles Glass said Iraqis had abandoned their positions 
            near the town of Chamchamal in northwestern Iraq. On Wednesday, 
            Glass said, between 200 and 300 Iraqis were in hilltop positions 
            around Chamchamal; by this evening, there were none. The apparently 
            retreating Iraqi forces, Glass said, had not been engaged by Kurdish 
            fighters, and there were no coalition forces in the immediate area.
             The road west from Chamchamal leads to the oil hub of Kirkuk, 
            where Iraqi forces are known to have established a strong defense. 
            The retreating Iraqis may have been ordered to help prepare to 
            defend Kirkuk, Glass said.
             Glass said it was not clear if the Iraqis abandoning their 
            positions were regular members of the Iraqi military. The Iraqi 
            fighters  some 200 to 300 men  had been in the hilltops only one 
            night before. In their hasty retreat, they left behind light 
            weaponry, including rocket-propelled grenade launchers and rifles. 
             
             
             The development came just hours after 1,000 paratroopers from the 
            173rd U.S. Airborne Brigade dropped into Kurdish-controlled northern 
            Iraq late Wednesday and early today, at an airstrip outside the town 
            of Bashur, 30 miles south of the Turkish border. They set up 
            airfield operations to support follow-up forces. 
             Bush, Blair Split on Post-Saddam 
            Plans
             Meanwhile, President Bush and British Prime Minister Tony Blair 
            met at Camp David in Maryland today to discuss plans for a 
            post-Saddam Iraq  a divisive issue between the two allies. 
             The White House has drawn up a plan for American officials to run 
            Iraq, with U.N. involvement, while Blair wants the United Nations to 
            have a leading if not controlling role in rebuilding Iraq.
             "No doubt, the United Nations has got to be closely involved in 
            this process," Blair said at a news conference. He conceded that 
            details of a new Iraqi government had not been resolved.
             Both coalition leaders reiterated their confidence in the war 
            effort, while refusing to predict how long the fighting would 
            continue. They said victory would remain the focus of the war, not a 
            timetable.
             "This isn't a matter of timetable, it's a matter of victory," 
            Bush said. "And the Iraqi people have got to know that. They've got 
            to know that they will be liberated and Saddam Hussein will be 
            removed, no matter how long it takes."  
             ABCNEWS' Richard Engel in Baghdad, Tim Scheld in Qatar, and 
            John McWethy, Lisa Sylvester, John Cochran, Brian Hartman, Terry 
            Moran and Martha Raddatz in Washington contributed to this report. 
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