This is the usual argument on how grand strategy is determined by geography. That is certainly true in history.
It is my contention that this actually is no longer true at all. Certainly not from a military point of view when the west is able to deliver superior force to any chosen point. What is true is that economics remain partially bound by geography but the implied cost of that has been dropping steadily.
Thus future strategy will focus on accelerating and directing social change to produce modernity and to optimize modernity itself, particularly by proscribing protocols that eliminate poverty.