A wolf and a penguin could never live together, nor could a camel and a hippopotamus. That would be absurd.
And the older you get, the fewer things you really love. And by the time you get to my age, maybe it's only one or two things. With me, I think it's one.
Let's assume, some player assaults with his arab army a coastal city by sea, while I control the byzantine fleet. For some reason, I allow that without doubling his cubes and battling his army on sea (I know, I could not do one of this without the other). However, the arab army is defeated.
Now, I assume, in this situation I am nevertheless allowed to deny the arab army its retreat overseas, right?
I assume so too but I couldn't find anything explicitly in the rules or FAQ about it.