"This is the moment when we must renew the goal of a world without nuclear weapons. The two superpowers that faced each other across the wall of this city came too close too often to destroying all we have built and all that we love. With that wall gone, we need not stand idly by and watch the further spread of the deadly atom."
"I understand those who protest that some countries have weapons that others do not. No single nation should pick and choose which nations hold nuclear weapons. That is why I strongly reaffirmed America's commitment to seek a world in which no nations hold nuclear weapons."
"We must stop the spread of nuclear weapons and seek the goal of a world without them.... America intends to keep our end of the bargain. We will pursue a new agreement with Russia to substantially reduce our strategic warheads and launchers."
"In the middle of the last century, nations agreed to be bound by a treaty whose bargain is clear: All will have access to peaceful nuclear power; those without nuclear weapons will forsake them; and those with nuclear weapons will work towards disarmament. I am committed to upholding this treaty. It is a centerpiece of my foreign policy. And I'm working with President Medvedev to reduce America and Russia's nuclear stockpiles."
"Even as we prosecute two wars, we are also confronting perhaps the greatest danger to the American people -- the threat of nuclear weapons. I have embraced the vision of John F. Kennedy and Ronald Reagan through a strategy that reverses the spread of these weapons, and seeks a world without them."
"As we pursue the world's most dangerous extremists, we're also denying them the world's most dangerous weapons, and pursuing the peace and security of a world without nuclear weapons."
"American leadership can also be seen in the effort to secure the worst weapons of war. Because Republicans and Democrats approved the new START treaty, far fewer nuclear weapons and launchers will be deployed. Because we rallied the world, nuclear materials are being locked down on every continent so they never fall into the hands of terrorists."
"To lift the specter of mass destruction, we must come together to pursue the peace and security of a world without nuclear weapons. Over the last two years, we've begun to walk down that path. Since our Nuclear Security Summit in Washington, nearly 50 nations have taken steps to secure nuclear materials from terrorists and smugglers. Next March, a summit in Seoul will advance our efforts to lock down all of them. The new START treaty between the United States and Russia will cut our deployed arsenals to the lowest level in half a century, and our nations are pursuing talks on how to achieve even deeper reductions. America will continue to work for a ban on the testing of nuclear weapons, and the production of fissile material needed to make them."
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