> Under NATO nuclear weapons sharing, the United States has provided nuclear weapons for Belgium, Germany, Italy, the Netherlands, and Turkey to deploy and store
Difference is those weapons are not Belgian to deploy against e.g. Austria whenever anti-Austrian fascist party is in power in Belgium. Example sounds absurd today, but you can use Hungary for example, another country bitter of its lands lost a century ago. That’s basically what the world with nuclear weapons everywhere looks like. Game of chicken against the opponents perceived weak over opportunistic use of century-old grievances.