A country or coalition that mastered Eurasia would become a global menace, for it would possess the power to make even the most distant democracies insecure. So, aspiring conquerors would lunge for Eurasian hegemony, while offshore powers — and the vulnerable states situated along Eurasia’s edges — would fight to preserve their freedoms by keeping the supercontinent divided.

This passage is the crux of the article. Really telling what the intent of the author is with that last sentence. Yankees have always been nervous about the prospect of a united Asia/Europe, which is exactly what the "supercontinent" was heading towards before the Ukraine situation. Europe, Russia, India and China together posses industry, population and resources that absolutely dwarf what America possess.