Hi. I'm a relative newbie. I'm trying to take a capital that is on a different continent. My nukes don't have enough range to strike. After many attempts, I was able to rebase a nuke to a nuclear sub. Then, I sent sub to adjacent tile of enemy capitol. But, when I click on ranged attack, even though the sub is clearly close enough to the city, the capitol is not included in the range. Is this a bug? Or, are nuclear subs not able to attack cities? Is there some other way to nuke this capitol? Thanks.