The missile assault, and subsequent fires, had sent refugees pouring through the passes.
The convention prohibits sending such refugees back into the dangerous situations they have fled - just what is now happening on the Croatian border.
The civil war that followed sent refugees into inhospitable terrain where they were felled by hardship and disease.
The process of sending Vietnamese refugees back to their country or resettling them elsewhere is expected to take several years.
Officials said there would be no attempt to send refugees back to areas now governed by hostile ethnic groups.
A player can attempt to send refugees to their opponent in order to frustrate their attempts to remove beans.
The night before, a British transport plane crashed 300 yards from a large refugee camp, sending refugees running as fuel and ammunition on board exploded.
Afghanistan has suffered through 22 straight years of war - and has sent refugees to its neighbors during all that time.
It would make it easier to send refugees back to such states.
Nor is Iraq's record one which justifies sending refugees back.