One of the commission's co-chairmen, former Rep. Lee Hamilton, D-Ind., underscored the urgency of changing course in Iraq, where conditions were described as "grave and deteriorating." He was asked at what point the situation there, if not corrected, will be hopeless.
"Well, there certainly is that point, and we're perilously close to that point," he replied.
Hamilton and his co-chairman, former Secretary of State James A. Baker III, testified before the Senate Armed Services Committee one day after delivering their report on recommended changes to Iraq policy. Hamilton said a new, more realistic and practical approach is needed.
"That's a very tough policy problem, and in order for this to happen, it can't be pie in the sky, it can't be idealistic, it has to be pragmatic," he said. Later, he added, "We reject the idea that the situation is hopeless."
Most senators broadly endorsed the commission's report, which made 79 recommendations for policy changes. Their skepticism focused mainly on two of the recommendations: a diplomatic approach to Iran and Syria, and an acceleration of the U.S. military's work to train and advise Iraqi forces.
Hamilton said it was essential for the White House and Congress to work together, and he criticized lawmakers for not having taken a stronger role in overseeing the Bush administration's war policies.
Many in Congress have praised the group's report, which was eight months in the making. But Sen. John McCain, R-Ariz., told Hamilton and Baker that he does not believe their approach will work. The panel called for a phase-out of the U.S. combat role by 2008 and rejected the idea of a short-term increase in the number of combat troops in Iraq. But McCain has favored a major buildup of combat forces, CBS News national security correspondent David Martin reports.
"There's only one thing worse than an overstressed Army and Marine Corps, and that's a defeated Army and Marine Corps," said McCain, a Vietnam veteran and a 2008 Republican presidential hopeful. "I believe this is a recipe that will lead to our defeat sooner or later in Iraq."
President Bush offered his first response to the commission's sharp criticism. He promised a new approach in Iraq, without spelling out what it would be, CBS News chief White House correspondent Jim Axelrod reports.
"I think you'll see something differently, because it's a practical answer to a situation on the ground that's not the way we like it," Mr. Bush said.
Sen. Hillary Rodham Clinton, D-N.Y., said the key question now is whether President Bush will effectively implement a new policy.
"We need the White House to become the `Iraq Results Group,'" she said.
Baker said Congress could play a key role in that regard.
"If the Congress would come together behind supporting — let's say utopianly — all of the recommendations of this report, that would do a lot toward moving things downtown," Baker told the committee.
But Hamilton seems to have little confidence that the group's recommendations will lead to victory, Martin reports.
"The opinions in front of you aren't very good. You want to get out in a way that is responsible," he said.
As the pair of national leaders appeared on Capitol Hill, Mr. Bush met at the White House with British Prime Minister Tony Blair, a key ally in Iraq. Speaking to reporters, Mr. Bush referred to this as a "difficult moment for America and Great Britain."
But what the president called "unsettling," the Baker-Hamilton report called "grave and deteriorating." A British reporter's question about the disparity drew a defensive response, Axelrod reports.
"That won't convince many people that you're still in denial about how bad things are in Iraq, and question your sincerity about changing course," Nick Robinson of the BBC said.
. "Does that help?"