Finally. I view this as a much bigger deterrent against a Russian invasion than tanks and boots on the ground.

Let's not forget that it was the US that didn't want much nuclear capability in Europe so they offered to protect us with their nuclear umbrella. They strongly objected to Italy's nuclear program for example.

Now that the US umbrella can't be relied upon, we will need our own. I do think it's the main reason Europe has been safe since WWII.