Alright, so, I'm playing last night. I'm humans, the korx have always been somewhere between cool and hostile with me, although we've never declared war on each other. My espionage is as high as it can go with them (with every race, for that matter).

The problem: a random event occurs, where a diplomat of mine is having dinner with the Korx leaders and insults one of them. They declare war because of this. The last line in the event's description is "Critics of the administration point out that if you had spent more money on espionage, you would know enough about their culture to not have done that".

Anyway, just seems like a glitchy description more than anything else, I guess.