Re: cooperative intelligence
 

Actually, cooperative intel from an ally can help you defend against intel attacks. Since your attack is enhanced, you can divert a greater percentage of your intel production to defense.

Re: cooperative intelligence
 

Good point, CK. Do you have any insight about my second question?

(By the way, thanks very much for all you do to help us newbies get a handle on the wonderful complex game!)

Re: cooperative intelligence
 

The effect amounts are somewhat random and do not depend on the level of research you've performed in any of the intelligence achievements.

Re: cooperative intelligence
 

Thank you for clarifying. I'll let my players know.