Washington has announced it is flying another 30,000 troops from the US to the war zone. The announcement came after Saddam Hussein's elite Republican Guard was ordered on the offensive and a column of 1,000 vehicles was sent from Baghdad to confront US troops in central Iraq. The US is flying its high tech 4th Infantry Division and other units to the Gulf - raising fears the American forces have become overextended in their race to the southern approaches to Baghdad