Change the rules on the use of nuclear weapons, slow down the arms race, declare that the United States will not use nuclear weapons first, change the president's powers to order the use of nuclear weapons and reduce the number of weapons to a thousand strategic nuclear weapons deployed: this is the appeal to the president of the United States, Joe Biden, signed by 700 scientists and engineers.
Among the signatures there are those of 21 Nobel Prize winners, including the Italian Giorgio Parisi.
The occasion is the update of the Nuclear Posture Review (NPR) which establishes the role of nuclear weapons in the US defense strategy.
