Many countries have nuclear weapons, doesn't you stop wanting to have basic strategic advantages on your side. Why have a navy if you have nukes, why build tan

Many countries have nuclear weapons, doesn't you stop wanting to have basic strategic advantages on your side. Why have a navy if you have nukes, why build tanks when you already have nukes, why not let your adversary encircle you if you have nukes. Nukes are typically tactical weapons, you will still have a deal with a ground force once all the nukes have been used.