In the news

Some slim hope that this will have the effect described:

The US has written to treaty signatories saying the Trump administration believes they made “a strategic error” and urging them to rescind their ratification.

The letter, obtained by the Associated Press, said the five original nuclear powers – the US, Russia, China, Britain and France – and America’s NATO allies “stand unified in our opposition to the potential repercussions” of the treaty.

However campaigners hope the treaty will have the same impact as previous international treaties on landmines and cluster munitions, bringing a stigma to their stockpiling and use, and thereby a change in behaviour even in countries that did not sign up.

Ican said in a statement that it expects “companies to stop producing nuclear weapons and financial institutions to stop investing in nuclear weapon-producing companies”.

https://www.theguardian.com/world/2020/oct/25/treaty-banning-nuclear-weapons-made-official-with-50th-un-signatory