Perhaps this article is true, but what other country with Nukes is actually testing them.
North Korea, perhaps I’ve read they are planning a test in the near future.
I have not heard a word about China, Russia, UK, France or any other major country designing, building and testing new nuclear weapons, so it’s just not the USA.
All of those countries have sign multiple treaties with respect to nuclear weapons.
https://www.atomicarchive.com/resources/treaties/index.html