I've come to the conclusion there is more than 1 war taking place in Ezekiel 38 and 39. Possibly 2 or 3, since so many have drawn different conclusions from these 2 chapters.

America has been populated with many people from all over the world. Not so sure if it was ever desolate. But is un walled.

I am completely certain though that Israel is involved in one of these wars:

Ezekiel 38:

14 Therefore, son of man, prophesy and say unto Gog, Thus saith the Lord God; In that day when my people of Israel dwelleth safely, shalt thou not know it?

16 And thou shalt come up against my people of Israel, as a cloud to cover the land; it shall be in the latter days, and I will bring thee against my land, that the heathen may know me, when I shall be sanctified in thee, O Gog, before their eyes.