Addressing "Vienna issues": the Comprehensive Nuclear Test-Ban Treaty; compliance and verification; export controls; cooperation in the peaceful uses of nuclear energy; nuclear safety; nuclear security; and discouraging withdrawal from the Treaty on the Non-Proliferation of Nuclear WeaponsWorking paper submitted by Australia, Austria, Canada, Denmark, Finland, Hungary, Ireland, the Netherlands, New Zealand, Norway and Sweden (the Vienna Group of Ten) Treaty on the Non-Proliferation of Nuclear Weapons - Preparatory Committee for the Tenth Review Conference Second session (2018) Vienna Group of Ten Working papers 2018-04-22 NPT/CONF.2020/PC.II/WP.5 EN