Neighbor of Vietnam (4)

I believe the answer is:

laos

'neighbor of vietnam' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for laos that I've seen before include "Mountainous state in southeastern Asia" , "Country between Thailand/Vietnam" , "Indo-Chinese country" , "Republic in southeastern Asia" , "SE Asian country" .)

I've seen this clue in the Newsday, the USA Today and the Universal.

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