No, you can't avoid wars, and specifically you cant avoid fights. We declared on 2 kingdoms who waved us with size advantages and won both wars this age.
EDIT:
I think the point I want to make here, is that it's very unlikely for any kingdom to avoid conflict throughout an age unless they have explosive early growth and very good CF deals. Certainly we should not be an example of this, as we only have a few ceasefires in place that we didn't have to exchange hits to get, and those were all offered to us.