Empire novels (Orson Scott Card)

In this sequel to Card's bestselling novel "Empire," President Averell Torrent launches America into a get-tough, this-world-is-our-empire foreign policy stance. When Captain Bartholomew "Cole" Coleman sees the danger Torrent poses to American democracy and the potential disasters involved in his foreign military adventures, he quickly runs afoul of Torrent and, while on the run, finds proof that Torrent orchestrated a presidential assassination.