Everybody seems to be so impressed by these UN seals on ammo dumps in Iraq. I'm not.
It so happens that I was raised around truckers who went to some really iffy places. Seals? Ha? Thieves could just take the entire back doors off the trailers, rob them blind, then reinstall the doors without breaking seals. If you wanted to secure your load, you'd back your trailer up against a wall or another trailer so close that no one could get into the gap.
I dare to suggest that one so highly motivated as Saddam could defeat any seal the UN could place on a site, especially after disabling all the other surveillance equipment placed on the sites.