Playing as Japan, I've captured most of the important islands of the pacific and annexed Australia and NZ. There is around 8 units on Guam and I have no clue how to conquer it. I have one of my biggest fleet blocking the port and i have destroyers and subs raiding convoys. But starving the americans doesent seem to work, and I can't use any planes to bomb the island. Is there some way of getting guam?