A South African diplomat who will chair an upcoming review conference for a treaty intended to ban nuclear weapons said he hopes the meeting will be a chance to affirm the abolition of such weapons as a norm.Adopted and opened for signature in 2017, and entering into force in 2021, the Treaty on the Prohibition of Nuclear Weapons bans its members from developing, testing, possessing or stationing nuclear weapons.So far, 75 states have ratified or acceded to the treaty, with 26 additional signatories yet to become party to it. But none of the original five nuclear weapons states -- Britain, …READ FULL ARTICLE