听力原文： President Bush is sending over 20,000 more U.S. troops into Iraq. In an address from the White House last night, Mr. Bush said he considered suggestions from U. S. lawmakers to scale back U. S. efforts in Iraq. But he warned that stepping back now would force a collapse of the Iraqi government. The consequences of failure are clear. Radical Islamic extremists would grow in strength and gain new recruits. They would be in a better position to topple moderate governments, create chaos in the region, and use oil revenues to fund their ambitions. Iran would be emboldened in its pursuit of nuclear weapons. Our enemies would have a safe haven from which to plan and launch attacks on the American people. But Democratic Senator Richard Durbin says the president's new plan runs contrary to what his own generals have advised him to do. General John Abizaid until recently, the commanding general in Iraq and Afghanistan, said, 'More American forces prevent the Iraqis from doing more, from taking more responsibility for their own future.' And Republican Senator Sam Brownback on a visit to Iraq said he does not believe Sending more troops to Iraq is the answer. A collapse of Iraq government may lead to all of the following EXCEPT ______.