[Valerius]

I agree we should go ahead and look for a sub. It can be difficult to find them but this is a good position (but also not a late game micromanagement nightmare) so perhaps we'll have better chances. It's worth spending a few days to try to find a sub.

While the AI isn't a threat long term in the short term it's a problem if you are already involved in a war and have an extensive coastline. Still, I see your point about just letting him stale not being a good idea.