The UN Security Council has unanimously passed a resolution to limit nuclear proliferation. The US-drafted measure calls for further efforts to achieve “a world without nuclear weapons.” But critics say it fails to include mandatory provisions that would have required nuclear states to take concrete disarmament steps. The resolution also lacks any call on states to halt production of fissile materials for nuclear weapons. President Obama became the first US president to chair a UN Security Council summit, which also marked the fifth summit-level meeting of the council in its sixty-three years of existence.

President Obama: “In the six-plus decades that this Security Council has been in existence, only four other meetings of this nature have been convened. I called for this one so that we may address, at the highest level, a fundamental threat to the security of all peoples and all nations: the spread and use of nuclear weapons.”