If things get bad enough, maybe hold outs will resort to fast neutron enhanced nuclear devices. The effective range of fast neutrons in the atmosphere is small, so they can be used tactically.
Neat island, but I can assure you South Americans and Africans would have no issues invading it by boat.
It would be a decent stronghold though for awhile I bet, but in the end desperation would lead to its discovery and pillaging.
Have you ever played the game rust? It's a survival game where the world you spawn in is pretty large. It always amazes me how similar people think in survival games. No good spot ever goes undiscovered.
If the islands were not mapped that would be your best bet.
> Neat island, but I can assure you South Americans and Africans would have no issues invading it by boat.
> It would be a decent stronghold though for awhile I bet, but in the end desperation would lead to its discovery and pillaging.
So in a climate apocalypse scenario where people are starving and desperate and resources sparse, said people are going to be able to gather enough provisions and fuel to organise a weeks long trip across thousands of miles of open ocean in order to invade a settlement that is living at subsistence level. Right...