Al-Qaeda and other extremists seek nuclear weapons, and we have every reason to believe that they would use them

 As we know, these men belonged to al-Qaeda - a group of extremists who have distorted and defiled Islam, one of the world's great religions, to justify the slaughter of innocents.

Just days after 9/11, Congress authorised the use of force against al-Qaeda and those who harboured them - an authorisation that continues to this day. The vote in the Senate was 98 to 0. The vote in the House was 420 to 1. For the first time in its history, the North Atlantic Treaty Organization invoked Article 5 - the commitment that says an attack on one member nation is an attack on all. And the United Nations Security Council endorsed the use of all necessary steps to respond to the 9/11 attacks. America, our allies and the world were acting as one to destroy al-Qaeda's terrorist network, and to protect our common security.



But while we have achieved hard-earned milestones in Iraq, the situation in Afghanistan has deteriorated. After escaping across the border into Pakistan in 2001 and 2002, al-Qaeda's leadership established a safe haven there. Although a legitimate government was elected by the Afghan people, it has been hampered by corruption, the drug trade, an under-developed economy, and insufficient security forces. Over the last several years, the Taliban has maintained common cause with al-Qaeda, as they both seek an overthrow of the Afghan government. Gradually, the Taliban has begun to take control over swathes of Afghanistan, while engaging in increasingly brazen and devastating acts of terrorism against the Pakistani people.

Most of all, I know that this decision asks even more of you - a military that, along with your families, has already borne the heaviest of all burdens. As president, I have signed a letter of condolence to the family of each American who gives their life in these wars. I have read the letters from the parents and spouses of those who deployed. I have visited our courageous wounded warriors at Walter Reed. I have travelled to Dover to meet the flag-draped caskets of 18 Americans returning home to their final resting place. I see first-hand the terrible wages of war. If I did not think that the security of the United States and the safety of the American people were at stake in Afghanistan, I would gladly order every single one of our troops home tomorrow.



So no - I do not make this decision lightly. I make this decision because I am convinced that our security is at stake in Afghanistan and Pakistan. This is the epicentre of the violent extremism practiced by al Qaeda. It is from here that we were attacked on 9/11, and it is from here that new attacks are being plotted as I speak. This is no idle danger, no hypothetical threat. In the last few months alone, we have apprehended extremists within our borders who were sent here from the border region of Afghanistan and Pakistan to commit new acts of terror. This danger will only grow if the region slides backwards, and al-Qaeda can operate with impunity. We must keep the pressure on al-Qaeda, and to do that, we must increase the stability and capacity of our partners in the region.


Of course, this burden is not ours alone to bear. This is not just America's war. Since 9/11, al Qaeda's safe-havens have been the source of attacks against London and Amman and Bali. The people and governments of both Afghanistan and Pakistan are endangered. And the stakes are even higher within a nuclear-armed Pakistan, because we know that al-Qaeda and other extremists seek nuclear weapons, and we have every reason to believe that they would use them. 

Because this is an international effort, I have asked that our commitment be joined by contributions from our allies. Some have already provided additional troops, and we are confident that there will be further contributions in the days and weeks ahead. Our friends have fought and bled and died alongside us in Afghanistan. Now, we must come together to end this war successfully. For what's at stake is not simply a test of Nato's credibility - what's at stake is the security of our allies, and the common security of the world.



In the past, there have been those in Pakistan who have argued that the struggle against extremism is not their fight, and that Pakistan is better off doing little or seeking accommodation with those who use violence. But in recent years, as innocents have been killed from Karachi to Islamabad, it has become clear that it is the Pakistani people who are the most endangered by extremism. Public opinion has turned. The Pakistani army has waged an offensive in Swat and South Waziristan. And there is no doubt that the United States and Pakistan share a common enemy.

We will strengthen Pakistan's capacity to target those groups that threaten our countries, and have made it clear that we cannot tolerate a safe haven for terrorists whose location is known, and whose intentions are clear. America is also providing substantial resources to support Pakistan's democracy and development. We are the largest international supporter for those Pakistanis displaced by the fighting. And going forward, the Pakistani people must know: America will remain a strong supporter of Pakistan's security and prosperity long after the guns have fallen silent, so that the great potential of its people can be unleashed.



Let me be clear: none of this will be easy. The struggle against violent extremism will not be finished quickly, and it extends well beyond Afghanistan and Pakistan. It will be an enduring test of our free society, and our leadership in the world. And unlike the great power conflicts and clear lines of division that defined the 20th Century, our effort will involve disorderly regions and diffuse enemies.

And we cannot count on military might alone. We have to invest in our homeland security, because we cannot capture or kill every violent extremist abroad. We have to improve and better coordinate our intelligence, so that we stay one step ahead of shadowy networks.

We will have to take away the tools of mass destruction. That is why I have made it a central pillar of my foreign policy to secure loose nuclear materials from terrorists; to stop the spread of nuclear weapons; and to pursue the goal of a world without them. Because every nation must understand that true security will never come from an endless race for ever-more destructive weapons - true security will come for those who reject them.

Finally, we must draw on the strength of our values - for the challenges that we face may have changed, but the things that we believe in must not. That is why we must promote our values by living them at home - which is why I have prohibited torture and will close the prison at Guantanamo Bay. And we must make it clear to every man, woman and child around the world who lives under the dark cloud of tyranny that America will speak out on behalf of their human rights, and tend to the light of freedom, and justice, and opportunity, and respect for the dignity of all peoples. That is who we are. That is the moral source of America's authority.

America, we are passing through a time of great trial. And the message that we send in the midst of these storms must be clear: that our cause is just, our resolve unwavering. We will go forward with the confidence that right makes might, and with the commitment to forge an America that is safer, a world that is more secure, and a future that represents not the deepest of fears but the highest of hopes. Thank you, God bless you, God bless our troops, and may God bless the United States of America.