We should not fear Iran using a nuclear device that would guarantee its own annihilation.
What we have been blind to with this deal is an enormous cash infusion into Iran that will fund a massive buildup of conventional weapons and armies. This will realize Iran's hegemonic ambition to dominate the entire Middle East, support far more proxy terrorists, lead to a high likelihood of state takeovers and bloody wars for decades. This is what happens in deals with the devil.
Sam Sugar, Aventura