Ozymandius
Prince
If you do not cheat don't don't read the following. I do not want to drink hemlock for corrupting youth a la Socrates
If you are losing wonders to the AI, save your game under'spying mission'; establish embassies to find out the years to completion of the wonder (only if in the capital), retrieve your spy (oops file),
and work on something else if you can't narrow the "missile gap".
If the AI didn't want you to spy/cheat it would not have given you the ability.
I don't know how to check with your embassy to get the info supplied at the time it is established in succeeding years.
If you are losing wonders to the AI, save your game under'spying mission'; establish embassies to find out the years to completion of the wonder (only if in the capital), retrieve your spy (oops file),
and work on something else if you can't narrow the "missile gap".

If the AI didn't want you to spy/cheat it would not have given you the ability.
I don't know how to check with your embassy to get the info supplied at the time it is established in succeeding years.