God does not change. He is the same yesterday, today and forever--His words, not mine. We have a new convenant of grace for those of us who accept it, but that does not mean God will not still "heal their land" (See 2 Chron. 7:14)
I understand your point about individual salvation. My point is different. It is simply that God most certainly can and does act in favor of nations from time to time, as we have seen throughout history (our own included), and when a nation collectively turns its back on Him, He will turn His face away from that nation.
I believe you are missing my point. I already said God does not save a nation in the same way He saves individuals who give their lives to Jesus.
Perhaps you are right. I think we are in agreement.