Mechwarrior: Dark Age #30: To Ride the Chimera (A Battletech Novel)

The Marik-Stewart Commonwealth is near to collapsing under negligent leadership: if something isn’t done soon, its implosion will leave many worlds and many lives vulnerable to factions willing to conquer and exploit them... 
 
A MechWarrior without peer, Thaddeus Marik has become the figurehead for a new community of worlds attempting to resurrect the Free Worlds League. After defeating a Lyran invasion on the planet of Savannah and negotiating a successful alliance with the Protectorate Coalition, Marik must now ally himself with Jessica Halas-Hughes Marik if the new league is to have a chance.
 
Having Marik and his forces at her side gives Jessica much-needed credibility and greater influence on Oriente. But old hatreds die hard, erupting in a war against enemies who will stop at nothing to destroy the founding of a new league...