China, Russia, UK, US, France pledge to avoid nuclear war

United States, Russia, Britain, France, and China have agreed that further spread of nuclear arms and nuclear war should be avoided. According to a joint statement by the five nuclear powers published by the Kremlin,  the countries consider it is their primary responsibility to avoid war between the nuclear states and should reduce strategic risks, with an aim to work with all countries to create an atmosphere of security. Chinese Vice Foreign Minister Ma Zhaoxu said the joint statement could help to increase mutual trust and replace competition among major powers with coordination and cooperation. Zhaoxu added that  China has a "no first use" policy on nuclear weapons.
France also released the statement, underscoring that the five powers reiterated their determination for nuclear arms control and disarmament and they would continue bilateral and multilateral approaches to nuclear arms control. Russian Foreign Ministry Spokeswoman Maria Zakharova said in a statement that this document was formulated on our initiative and with the most active participation of Russian representatives. Its release was supposed to coincide with the start of Tenth Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons. It had been scheduled to open in New York on January 4, but was postponed due to the worsening epidemiological situation in the United States. 

In a statement, White House said that We affirm that a nuclear war cannot be won and must never be fought.  As nuclear use would have far-reaching consequences, we also affirm that nuclear weapons—for as long as they continue to exist—should serve defensive purposes, deter aggression, and prevent war.  We believe strongly that the further spread of such weapons must be prevented.