We are playing Risk and after getting 60 extra troops, there are no territory cards left, so no one able to create new sets to exchange. Should we re-flush the cards and continue building sets?
This is not explicit in the rules. But common sense kicks in.
- The rules mention a trade in, no discard or remove from game.
- The rules mention that each set has a higher unit value and there is no end mentioned of the set.
So reusing is more logical than the set ending. So you can safely assume that you can reuse the traded in cards.