[T]he fact that I want to abide by the United States Constitution, [the McCain campaign says], shows that I have a "pre-9/11 mindset."

Well, I refuse to be lectured on national security by people who are responsible for the most disastrous set of foreign policy decisions in the recent history of the United States. The other side likes to use 9/11 as a political bludgeon. Well, let's talk about 9/11.

The people who were responsible for murdering 3,000 Americans on 9/11 have not been brought to justice. They are Osama bin Laden, al Qaeda and their sponsors -- the Taliban. They were in Afghanistan. And yet George Bush and John McCain decided in 2002 that we should take our eye off of Afghanistan so that we could invade and occupy a country that had absolutely nothing to do with 9/11. The case for war in Iraq was so thin that George Bush and John McCain had to hype the threat of Saddam Hussein, and make false promises that we'd be greeted as liberators. They misled the American people, and took us into a misguided war.

Here are the results of their policy: Osama bin Laden and his top leadership -- the people who murdered 3000 Americans -- have a safe-haven in northwest Pakistan, where they operate with such freedom of action that they can still put out hate-filled audiotapes to the outside world. That's the result of the Bush-McCain approach to the war on terrorism.

That's from the prepared text of remarks Barack Obama made on Wednesday, after the first meeting of his new Senior Working Group on National Security.