Caribbean Sea Region in the Year 2000

[Legbreaker]

Originally Posted by RN7

But it is not a target that you can effectively destroy with one nuclear weapon

You don't need to destroy the whole thing to render it essentially useless. It's long and narrow, you damage one part and the whole thing shuts down.
As for fallout, if a single small warhead was used close to one end, and the wind was blowing in the right direction, it would almost all have fallen into the sea.

Seriously, nuking the canal without lasting damage to nearby locations isn't at all impossible. Only takes two minutes of thinking to come up with possible answers.

There are just sooooo many more reasons why it would be nuked than why it wouldn't, and canon certainly isn't broken in any way by doing so.