I've been told by un-citable sources that this is a pillar of Canadian military strategy and the primary reason the United States will not attack Canada.
I've been told by un-citable sources that this is a pillar of Canadian military strategy and the primary reason the United States will not attack Canada.
You'd also wouldn't be able to coat the entire seaboard with enough radiation to be all that dangerous.
If Canada really wanted a nuclear deterrent, it could just build or buy a nuke. Hell the USA would probably give them nukes with the codes. It's done so with other NATO allies in the past.
[1] https://www.nrc.gov/reading-rm/doc-collections/fact-sheets/f...
I don't see the US taking over Canada before a World War would break out, however, which I think is a bit more of a realistic mitigating factor.
Or if the midwest grain fields stop yielding enough during a global drought, the USA might turns its eyes to newly thawing land up north.
It would look more like Germany taking over Austria than Germany invading Poland in any case.