On September 26, Archbishop Paul Richard Gallagher, Secretary for Relations with States and Head of the Delegation of the Holy See to the 73rd Session of the United Nations General Assembly, gave an intervention during the High-Level Plenary Meeting to commemorate and promote The International Day for the Total Elimination of Nuclear Weapons.
 
In his statement, Archbishop Gallagher said that the International Day for the Elimination of Nuclear Weapons affirms the international community’s common commitment to create conditions and steps for the total elimination of nuclear weapons. The world is not safer with nuclear weapons, he insisted, because peace and international stability cannot be founded on the threat of mutually assured annihilation. He also said that relying on the possession of nuclear weapons is contrary to the spirit and purpose of the UN. He urged the ratification of the Treaty on the Prohibition of Nuclear Weapons and the entry into force of the Comprehensive Nuclear Test-Ban Treaty, which he said complement the Treaty on the Non-Proliferation of Nuclear Weapons and must be fully implemented. He said that for these treaties to be signed, ratified and enter in force, trust among nations is needed, a trust that has been eroded by the recent lack of progress in nuclear disarmament and by the decision of some States to develop nuclear weapons capabilities.

His statement can be found here.