School children in the US conducted "Duck and Cover" drills in the class room. Air Raid Sirens were installed on street corners. Underground anti-aircraft missile batteries were placed around communities thru-out the US. MANY of the missile batteries were discovered in the 1990's after the cold war by construction crews; hardly anyone knew about those. Cold War secrets.
One was the SALT agreements, or the Strategic Arms Limitation Treaty. The treaty was between the United States and the Soviet Union which established an agreement on two documents which were both signed on May 26, 1972: the Anti-Ballistic Missile Treaty (ABM Treaty) and the Interim Agreement on the Limitation of Strategic Offensive Arms.
They were used.
Nuclear weapons
Yes, other countries had programs to research nuclear weapons but none developed working ones before the war ended.
There are two non-signatories that have developed nuclear weapons. Those are India and Pakistan. A total of 189 countries are party to the NPT.
Russia developed its own nuclear program, and was aided by espionage.
I'm not sure if this is what you are looking for, but it is a generally accepted fact that Israel has developed nuclear weapons. That concerns a lot of nations.
Other than what?
The first nuclear weapons were developed in the united States under the Manhattan Proyect which made the first nuclear bombs.
Not clear what is the question-it obviously concerns the nuclear deal but what do you want to know about it?
No. The Netherlands have not tested or developed nuclear weapons.
Red Snow was developed by the United Kingdom.
They were used.
1945
You can surely only find that out by asking your community
A moderator is a material that slows fast neutrons.
No, the hydrogen fusion bomb was not developed until 1952. The first nuclear weapons were developed and used in combat in 1945.
See link given from www.world-nuclear.org