I believe that a low-yield tactical nuclear weapon will only allow nuclear weapons to be used. In this case, less doesn’t mean more, or better. A tactical nuclear weapon may not have the immediate negative impact as a large strategic weapon does, but these smaller tactical weapons would likely be a primer to global nuclear war. Mutually Assured Destruction has served humans well. If we change the dynamics of the Prisoners Dilemma, we upset the balance of nuclear powers. Do we really want to contend with smaller nuclear powers that will exploit low-yield tactical weapons? The complexity of nuclear arsenals is what helps to ensure that such actors are not sharing the stage with the Super Powers. Let’s not make it easier for them.