Quote Originally Posted by GFX707 View Post
....in ETW without ever declaring war?
This is the ultimate test of the diplomacy system, and it certainly used to be possible in STW. The technique was referred to as 'The War of the Shadows' and involved systematic use of subversion and assassination to destroy opposing factions rather than open hostilities.

I really can't see how anything similar could be achieved within the limitations of the ETW diplomatic system. There seems to be no reliable way of causing a rebelion or assassinating enemy faction leaders.