No, they haven't. There's a complete shift in US foreign policy and things are happening which are unprecedented. There's no continuation of anything of the past 50 years, Republican or Democrat.
What's unprecedented? And since when? USA has been invading places and pushing their empire for decades. Maybe you mean unprecedented in your (short?) lifetime?
Reagan destroyed the pre-existing political system, racked up the debt, and cut taxes on the rich, and Republicans have ran and won on that ever since.
Wrecking the economy and blaming the Democrats are exactly what the GOP has done the last 50 years. I'm not saying that their current foreign policy has precedence, but their plan to deal with whatever fallout is coming is going to be to blame the dems, because that's what they've always done.