 Also in August, the last three non-Afghan UN officials slip out of Kabul by car to Pakistan, leaving Najibullah's fate unresolved.The ruling group wants to try Najibullah for his role in the civil war and for the death or disappearance of hundreds of thousands of Afghans while he commanded the once-feared secret police.Pakistan seals its border with Afghanistan, stranding thousands of Afghan refugees who have fled the rocket attacks on Kabul.