China has strongly rejected the U.S.'s accusations that it is accelerating the expansion of nuclear weapons. During the 10th Treaty on the Non-Proliferation of Nuclear Weapons (NPT) review conference in New York, Chinese representative Ding Tongbing said the U.S.'s huge amount of nuclear weapons is endangering global and regional security. He reiterated that China's nuclear weapons development is for deterrence and to fight back upon being attacked.