And they did nothing to stop the tunneling and bunker building. They did not even inform Israel. And they was a group of Irish UN Peacekeepers that were kept 'whiskey'ed up' most of the time.
The UN peacekeepers actually video taped the kidnapping, but did not intercede to rescue or stop the kidnapping.
Then they compounded their lack of action by attempting to hide the fact that they had video of the kidnapping.
I think eventually they gave the video to Israel but unfortunately the soldier was never returned.