Why is the Red Alert 2 nuclear bomb the secret weapon of the Soviet Union?

As for the nuclear bomb, it doesn't have to be invented before it can be used. Now China has a nuclear bomb. Does China belong to the Allies? I don't think so. The Soviet Union can make its own nuclear bomb. Moreover, during the Cold War between the United States and the Soviet Union, one of them was a nuclear weapons race, and both countries made a large number of nuclear weapons. Therefore, historically, it is reasonable for the Soviet Union to use nuclear bombs as special weapons.

Why doesn't America use it? I don't know if you have noticed this: in the Red Alert, the Soviet Union took the storm route and the United States took the high-tech route. Look at those units in the Soviet Union. The rhinoceros tank is more powerful than the grizzly bear tank, not to mention the apocalypse tank. The blood is thick and Kirov's empty boat is high. That's how the Soviet Union stormed, so the nuclear bomb conforms to the Soviet style. My empirical judgment is that the nuclear bomb is the most destructive of the three special weapons. After all, thunderstorms give people tips and time to repair. The United States takes the scientific and technological route. Look at its units: Phantom Tank, Tank with Smooth Edge, and special weapon-Weather Controller. You can control the weather. This is American style.