Non agression with enemy allies?

[unmerged(57044)]

In a recent game as russia I attacked persia (after france was mine ofc) and accepted their surrender (at this time they were not allied to anyone) then they joined the allies and soon UK troops were attacking me from persian soil and i could not attack back without another Dow.

Frustrating realy, and i know it is just game mechanics but shouldnt there be something in place where a country that you have a non agression pact with doesnt allow its allies to attack you through its borders?

Just a thought

 

[blue emu]

... or the N-A Pact is automatically voided (with the appropriate penalty applied) when they ally against you.

 

[unmerged(57044)]

Yes, that would actually seem more sensible