[thejeff]

I also generally specify that only scout are allowed to sneak through, though I'll usually grant permission if requested.

Using the NAP period to fill my lands with spies, assassins and/or stealthy troops to incite/kill/attack deep within my kingdom on the turn the NAP expires is something I wish to avoid. Obviously, if I don't find them I can't claim the deal is broken, but if I do...