I recently read the following sentence:
He helped normalize relations between the US and Vietnam and Laos.
Assuming Vietnam and Laos already had normal relations with each other (which they might not have, but that's another question), how would one write this sentence less awkwardly, or is this the best way to write it briefly? I'd like to have the implication that the US had a similar relationship with Vietnam and Laos. If the numbers on either side were different, I would have no problems. Should a comma go after "US"?
Apologies if this has been asked, but I don't know how to phrase it searchably.