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In New York, we advanced the cause of peace and security. I joined the first meeting between Israeli and Palestinian leaders in nearly a year-a meeting that even nine months ago did not seem possible. And we resolved to move forward in the journey toward a just, lasting and comprehensive peace in the Middle East.

We also took unprecedented steps to secure loose nuclear materials; to stop the spread of nuclear weapons; and to seek a world without them. As the first U.S. president to ever chair a meeting of the United Nations Security Council, I was proud that the Council passed an historic and unanimous resolution embracing the comprehensive strategy I outlined this year in Prague.

To prevent nuclear weapons from falling into the hands of terrorists, the Security Council endorsed our global effort to lock down all vulnerable material within four years. We reaffirmed the basic compact of the global nonproliferation regime: all nations have the right to peaceful nuclear energy; nations with nuclear weapons have the responsibility to move toward disarmament; and nations without them have the responsibility to forsake them.

The United States is meeting our responsibilities by pursuing an agreement with Russia to reduce our strategic warheads and launchers. And just as we meet our responsibilities, so must other nations, including Iran and North Korea.

Earlier this year, we imposed tough, new, sanctions on North Korea to stop their efforts to develop weapons of mass destruction. And we will continue to stand with our allies and partners to press North Korea to move in a new direction.