Ambush at Corellia - Roger MacBride Allen

A trade summit on Corellia brings Han Solo back
to the home world he left many years before.
Arriving on the distant planet with Leia, their children
and Chewbacca, Han finds Corellia overrun with
agents of the New Republic Intelligence and finds
himself part of a deceptive plan whose aim not even
he understands. One thing is clear: the five
inhabited worlds of the sector are on the brink of civil
war and the once peaceful coexistence of the three
leading races -- human, Selonian, and Drallan --
has come to an end.