[freeciv-ai] Alliances & war

[Jordi Negrevernis i Font <jorneg@xxxxxxxxxxx>]

   This is a good one...

   I'm in alliance - without teams. And i want to declare war against 
an ally and i don't want the other allies to go against me in a war.
   I break the alliance agreement with the choosen one. Then, in peace 
with this former ally, I bribe a city and more as needed, until this 
civilization declare war on me. So, the alliance declares war against 
the one to attacks.
   So, the attacked civilization is taken out of the alliance and 
declared in war. This is not fear.
   There is a way to detect this? Maybe with 'reason to cancel' variable?

   And another... Why if an ally declares war with another ally, you 
must declare war on the agressor? In the NATO, if Greece declare war on 
Turquey, the alliance does nothing.