This war will not be like the war against Iraq a decade ago, with a decisive liberation of territory and a swift conclusion. It will not look like the air war above Kosovo two years ago, where no ground troops were used and not a single American was lost in combat.

Our response involves far more than instant retaliation and isolated strikes. Americans should not expect one battle, but a lengthy campaign, unlike any other we have ever seen. It may include dramatic strikes, visible on TV, and covert operations, secret even in success. We will starve terrorists of funding, turn them one against another, drive them from place to place, until there is no refuge or no rest. And we will pursue nations that provide aid or safe haven to terrorism. Every nation, in every region, now has a decision to make. Either you are with us, or you are with the terrorists. (Applause.) From this day forward, any nation that continues to harbor or support terrorism will be regarded by the United States as a hostile regime.

Our nation has been put on notice: We are not immune from attack. We will take defensive measures against terrorism to protect Americans. Today, dozens of federal departments and agencies, as well as state and local governments, have responsibilities affecting homeland security. These efforts must be coordinated at the highest level. So tonight I announce the creation of a Cabinet-level position reporting directly to me -- the Office of Homeland Security.

And tonight I also announce a distinguished American to lead this effort, to strengthen American security: a military veteran, an effective governor, a true patriot, a trusted friend -- Pennsylvania's Tom Ridge. (Applause.) He will lead, oversee and coordinate a comprehensive national strategy to safeguard our country against terrorism, and respond to any attacks that may come.

These measures are essential. But the only way to defeat terrorism as a threat to our way of life is to stop it, eliminate it, and destroy it where it grows. (Applause.)

Many will be involved in this effort, from FBI agents to intelligence operatives to the reservists we have called to active duty. All deserve our thanks, and all have our prayers. And tonight, a few miles from the damaged Pentagon, I have a message for our military: Be ready. I've called the Armed Forces to alert, and there is a reason. The hour is coming when America will act, and you will make us proud. (Applause.)

This is not, however, just America's fight. And what is at stake is not just America's freedom. This is the world's fight. This is civilization's fight. This is the fight of all who believe in progress and pluralism, tolerance and freedom.

We ask every nation to join us. We will ask, and we will need, the help of police forces, intelligence services, and banking systems around the world. The United States is grateful that many nations and many international organizations have already responded -- with sympathy and with support. Nations from Latin America, to Asia, to Africa, to Europe, to the Islamic world. Perhaps the NATO Charter reflects best the attitude of the world: An attack on one is an attack on all.

The civilized world is rallying to America's side. They understand that if this terror goes unpunished, their own cities, their own citizens may be next. Terror, unanswered, can not only bring down buildings, it can threaten the stability of legitimate governments. And you know what -- we're not going to allow it. (Applause.)

Americans are asking: What is expected of us? I ask you to live your lives, and hug your children. I know many citizens have fears tonight, and I ask you to be calm and resolute, even in the face of a continuing threat.

I ask you to uphold the values of America, and remember why so many have come here. We are in a fight for our principles, and our first responsibility is to live by them. No one should be singled out for unfair treatment or unkind words because of their ethnic background or religious faith. (Applause.)

I ask you to continue to support the victims of this tragedy with your contributions. Those who want to give can go to a central source of information, libertyunites.org, to find the names of groups providing direct help in New York, Pennsylvania, and Virginia.

The thousands of FBI agents who are now at work in this investigation may need your cooperation, and I ask you to give it.

I ask for your patience, with the delays and inconveniences that may accompany tighter security; and for your patience in what will be a long struggle.

I ask your continued participation and confidence in the American economy. Terrorists attacked a symbol of American prosperity. They did not touch its source. America is successful because of the hard work, and creativity, and enterprise of our people. These were the true strengths of our economy before September 11th, and they are our strengths today. (Applause.)

And, finally, please continue praying for the victims of terror and their families, for those in uniform, and for our great country. Prayer has comforted us in sorrow, and will help strengthen us for the journey ahead.