Good evening. Tonight, I'd like to talk to you about the end of our combat mission in Iraq, the ongoing security challenges we face, and the need to rebuild our nation here at home.

I know this historic moment comes at a time of great uncertainty for many Americans. We have now been through nearly a decade of war. We have endured a long and painful recession. And sometimes in the midst of these storms, the future that we are trying to build for our nation - a future of lasting peace and long-term prosperity may seem beyond our reach.

But this milestone should serve as a reminder to all Americans that the future is ours to shape if we move forward with confidence and commitment. It should also serve as a message to the world that the United States of America intends to sustain and strengthen our leadership in this young century.

From this desk, seven and a half years ago, President Bush announced the beginning of military operations in Iraq. Much has changed since that night. A war to disarm a state became a fight against an insurgency. Terrorism and sectarian warfare threatened to tear Iraq apart. Thousands of Americans gave their lives; tens of thousands have been wounded. Our relations abroad were strained. Our unity at home was tested.

These are the rough waters encountered during the course of one of America's longest wars. Yet there has been one constant amidst those shifting tides. At every turn, America's men and women in uniform have served with courage and resolve. As Commander-in-Chief, I am proud of their service. Like all Americans, I am awed by their sacrifice, and by the sacrifices of their families.

The Americans who have served in Iraq completed every mission they were given. They defeated a regime that had terrorized its people. Together with Iraqis and coalition partners who made huge sacrifices of their own, our troops fought block by block to help Iraq seize the chance for a better future. They shifted tactics to protect the Iraqi people; trained Iraqi Security Forces; and took out terrorist leaders. Because of our troops and civilians -and because of the resilience of the Iraqi people - Iraq has the opportunity to embrace a new destiny, even though many challenges remain.

So tonight, I am announcing that the American combat mission in Iraq has ended. Operation Iraqi Freedom is over, and the Iraqi people now have lead responsibility for the security of their country.

This was my pledge to the American people as a candidate for this office. Last February, I announced a plan that would bring our combat brigades out of Iraq, while redoubling our efforts to strengthen Iraq's Security Forces and support its government and people. That is what we have done. We have removed nearly 100,000 U.S. troops from Iraq. We have closed or transferred hundreds of bases to the Iraqis. And we have moved millions of pieces of equipment out of Iraq.

This completes a transition to Iraqi responsibility for their own security. U.S. troops pulled out of Iraq's cities last summer, and Iraqi forces have moved into the lead with considerable skill and commitment to their fellow citizens. Even as Iraq continues to suffer terrorist attacks, security incidents have been near the lowest on record since the war began. And Iraqi forces have taken the fight to al Qaeda, removing much of its leadership in Iraqi-led operations.