Is it possible to force a retreat if a minor faction still owns one asset in the system?
Yes and the asset get given to another faction but i cannot remember if it is a random faction or the leading faction.Is it possible to force a retreat if a minor faction still owns one asset in the system?
Leading faction (by INF), but doesn't have to be the controlling faction, I believe.
But remember, retreat doesn't work for a native faction in its own system.