'Nations' in the Bible

If you kill this entire people at once, then the nations that have heard of your fame will say,

For from the top of the rocks I see them; from the hills I watch them. Indeed, a nation that lives alone, and it will not be reckoned among the nations.

Then Balaam looked on Amalek and delivered this oracle: "Amalek was the first of the nations, but his end will be that he will perish."