If the GOP of today was like the GOP of the 80s or even early 2000s, we most likely wouldn't be having this conversation because this thread wouldn't exist.
This discussion was always going to exist eventually. Fact of the matter is since the end of the cold war the cross Atlantic alliance has been increasingly at odds with each other on what the alliance means. At the end of the day, Russia, who is essentially a regional power, is what's driving the alliance towards death indicates nothing more than how sick it was to begin with. Obama was already making European leaders uneasy with his talk of pivoting US policy more towards Asia and letting Europe handle more of its own regional affairs by itself.