Quote Originally Posted by madalchemist
I'm with those who accuse it of being irrealistic: if your neighbour is thrice your size, army and economy, how in the Nine Hells would you have it as an enemy instead of having it as a trusted ally (or liege lord)?

There's no way in real world you'd attack him. And this policy is what in history all the nations did.
Uhm... History is full of examples of smaller powers attacking their much bigger neighbors. A few examples:

- Scotland attacking England
- Portugal attacking Spain
- Turks attacking byzantines at manzikert
- Various italian states attacking the HRE

Just because a kingdoms neighbor was more powerful than you didn't mean that they forged alliance, or that the small power even wanted an alliance/peace.