The mission in Iraq has been difficult and trying for our nation. But it is in the vital interest of the United States that we succeed. A free Iraq will deny al Qaeda a safe haven. A free Iraq will show millions across the Middle East that a future of liberty is possible. A free Iraq will be a friend of America, a partner in fighting terror, and a source of stability in a dangerous part of the world. By contrast, a failed Iraq would embolden the extremists, strengthen Iran, and give terrorists a base from which to launch new attacks on our friends, our allies, and our homeland. The enemy has made its intentions clear. At a time when the momentum seemed to favor them, al Qaida's top commander in Iraq declared that they will not rest until they have attacked us here in Washington. My fellow Americans: We will not rest either. We will not rest until this enemy has been defeated. (Applause.) We must do the difficult work today, so that years from now people will look back and say that this generation rose to the moment, prevailed in a tough fight, and left behind a more hopeful region and a safer America. (Applause.) We're also standing against the forces of extremism in the Holy Land, where we have new cause for hope. Palestinians have elected a president who recognizes that confronting terror is essential to achieving a state where his people can live in dignity and at peace with Israel. Israelis have leaders who recognize that a peaceful, democratic Palestinian state will be a source of lasting security. This month in Ramallah and Jerusalem, I assured leaders from both sides that America will do, and I will do, everything we can to help them achieve a peace agreement that defines a Palestinian state by the end of this year. The time has come for a Holy Land where a democratic Israel and a democratic Palestine live side-by-side in peace. (Applause.) We're also standing against the forces of extremism embodied by the regime in Tehran. Iran's rulers oppress a good and talented people. And wherever freedom advances in the Middle East, it seems the Iranian regime is there to oppose it. Iran is funding and training militia groups in Iraq, supporting Hezbollah terrorists in Lebanon, and backing Hamas' efforts to undermine peace in the Holy Land. Tehran is also developing ballistic missiles of increasing range, and continues to develop its capability to enrich uranium, which could be used to create a nuclear weapon.