A/RES/71/49 United action with renewed determination towards the total elimination of nuclear weapons 11. Calls upon all States to apply the principles of irreversibility, verifiability and transparency in relation to the process of nuclear disarmament and non proliferation; 12. Encourages the nuclear-weapon States to continue to convene regular meetings, with a view to facilitating nuclear disarmament actions, to build upon and expand their efforts to enhance transparency and to increase mutual confidence, including by providing more frequent and further detailed reporting on nuclear weapons and delivery systems dismantled and reduced as part of nuclear disarmament efforts throughout the review process of the Treaty on the Non-Proliferation of Nuclear Weapons towards the 2020 Review Conference of the Parties to the Treaty; 13. Calls upon States concerned to continue to review their military and security concepts, doctrines and policies, with a view to reducing further the role and significance of nuclear weapons therein; 14. Recognizes the legitimate interest of non-nuclear-weapon States in receiving unequivocal and legally binding security assurances from nuclear -weapon States which could strengthen the nuclear non-proliferation regime; 15. Recalls Security Council resolution 984 (1995) of 11 April 1995, noting the unilateral statements by each of the nuclear-weapon States, and calls upon all nuclear-weapon States to fully respect their existing commitments with regard to security assurances; 16. Encourages the establishment of further nuclear-weapon-free zones, where appropriate, on the basis of arrangements freely arrived at by the States of the region concerned and in accordance with the 1999 guidelines of the Disarmament Commission, 5 and recognizes that, by signing and ratifying relevant protocols tha t contain negative security assurances, nuclear-weapon States would undertake individual legally binding commitments with respect to the status of such zones and not to use or threaten to use nuclear weapons against States parties to such treaties; 17. Urges all States possessing nuclear weapons to continue to undertake all efforts necessary to comprehensively address the risks of unintended nuclear detonations; 18. Encourages further efforts towards the establishment of a Middle East zone free of nuclear weapons and all other weapons of mass destruction and their delivery systems, on the basis of arrangements freely arrived at by the States of the region and in accordance with the 1995 resolution on the Middle East, and the resumption of dialogue towards that end involving the States concerned; 19. Urges all States, in particular the eight remaining States listed in annex 2 to the Comprehensive Nuclear-Test-Ban Treaty, 6 to take individual initiatives to sign and ratify that Treaty without further delay and without waiting for any other State to do so, and to maintain all existing moratoriums on nuclear -weapon test explosions or any other nuclear explosions and declare their political will to do so pending the entry into force of the Treaty, and also urges all States to redouble their efforts to promote the entry into force of the Treaty through the article XIV process and other mutually reinforcing undertakings; _______________ 5 6 4/6 See Official Records of the General Assembly, Fifty-fourth Session, Supplement No. 42 (A/54/42). See resolution 50/245 and A/50/1027.