For we have learned from recent experience that when a financial system weakens in one country, prosperity is hurt everywhere. When a new flu infects one human being, all are at risk. When one nation pursues a nuclear weapon, the risk of nuclear attack rises for all nations. When violent extremists operate in one stretch of mountains, people are endangered across an ocean. And when innocents in Bosnia and Darfur are slaughtered, that is a stain on our collective conscience. That is what it means to share this world in the 21st century. That is the responsibility we have to one another as human beings.

This is a difficult responsibility to embrace. For human history has often been a record of nations and tribes subjugating one another to serve their own interests. Yet in this new age, such attitudes are self-defeating. Given our interdependence, any world order that elevates one nation or group of people over another will inevitably fail. So whatever we think of the past, we must not be prisoners of it. Our problems must be dealt with through partnership; progress must be shared.

That does not mean we should ignore sources of tension. Indeed, it suggests the opposite: we must face these tensions squarely. And so in that spirit, let me speak as clearly and plainly as I can about some specific issues that I believe we must finally confront together.

The first issue that we have to confront is violent extremism in all of its forms.

In Ankara, I made clear that America is not – and never will be – at war with Islam. We will, however, relentlessly confront violent extremists who pose a grave threat to our security. Because we reject the same thing that people of all faiths reject: the killing of innocent men, women, and children. And it is my first duty as President to protect the American people.

The situation in Afghanistan demonstrates America's goals, and our need to work together. Over seven years ago, the United States pursued al Qaeda and the Taliban with broad international support. We did not go by choice, we went because of necessity. I am aware that some question or justify the events of 9/11. But let us be clear: al Qaeda killed nearly 3,000 people on that day. The victims were innocent men, women and children from America and many other nations who had done nothing to harm anybody. And yet Al Qaeda chose to ruthlessly murder these people, claimed credit for the attack, and even now states their determination to kill on a massive scale. They have affiliates in many countries and are trying to expand their reach. These are not opinions to be debated; these are facts to be dealt with.

Make no mistake: we do not want to keep our troops in Afghanistan. We seek no military bases there. It is agonizing for America to lose our young men and women. It is costly and politically difficult to continue this conflict. We would gladly bring every single one of our troops home if we could be confident that there were not violent extremists in Afghanistan and Pakistan determined to kill as many Americans as they possibly can. But that is not yet the case.

That's why we're partnering with a coalition of forty-six countries. And despite the costs involved, America's commitment will not weaken. Indeed, none of us should tolerate these extremists. They have killed in many countries. They have killed people of different faiths – more than any other, they have killed Muslims. Their actions are irreconcilable with the rights of human beings, the progress of nations, and with Islam. The Holy Koran teaches that whoever kills an innocent, it is as if he has killed all mankind; and whoever saves a person, it is as if he has saved all mankind. The enduring faith of over a billion people is so much bigger than the narrow hatred of a few. Islam is not part of the problem in combating violent extremism – it is an important part of promoting peace.