AI is very treacherous! With enough money they will betray their own mother! (which I guess is the motherboard...)
If you didn't know this is because you didn't play enough Civ yet!
France made an alliance with Spain vs England. After razing 2 English cities in the Iberian Peninsula (stupid AI!), the Spanish decided to send Cav forces to try and take Italy (as the rest of Portugal was well defended)...
I postponed my peace agreement with the Spanish to attract more and more Spanish units to France... it worked!!!
Off course the razing of those cities is a pity (as I'd like to have them in the English control somewhere in the future), but that is how the AI operates. I also got 2 cities razed...
A piece of advice: if you see AI untis coming into your territory, be wary! Even if they are your allies!
It was really the French who got himself in that position, by starting an MA with Spain! Interesting to see that the French was later bitten by it's own poison!
I am willing to make a
gentlemen agreement with the French power: if you don't make anymore Alliances with Spain or Sweden, I won't either.
I got the .sav file.
.