Also, there's a way to make a "nuke" fairly easily. It's called a Super Compact Automated Mountain Placer or "SCAMP" for short. To be honest, "planes" are extremely slow and would serve almost no purpose since you could tell where they'd be going and someone would tower up to the direction it'd be going in and kill/pearl the people on-board.
We'd have to work out a plan to pull off a SCAMP. As far as I know, it's never been done before on the server and we would need to pioneer a lot of new ideas to make it work right. But let's save that talk for when we're actually at war. From what I know, we're in a sort of "peace" state as it is.