Sphere of influence / Kyle Mills.

Enhanced descriptions from Syndetics:

Hailed by Tom Clancy as a novelist who is fast becoming "the new master of gripping and intelligent page-turners," Kyle Mills is at the forefront of America's hot new thriller writers. His New York Timesbestsellers Storming Heavenand Burn Factorshowed Mills to be a storyteller of breathless pacing, stylish prose, and chilling effectiveness. In Sphere of Influence, he takes FBI agent Mark Beamon into unnervingly hazardous territory, with shattering results. Mark Beamon has always been an unconventional FBI agent. Years of putting the truth ahead of political expediency have resulted in a dead-end job in the Phoenix office. But a new terrorist threat brings him back from the wilderness. A videotape proves that a terrorist cell in the United States has access to modern missile technology. Suspecting there is a connection between the Mob and the fanatics, Beamon is sent undercover with a fellow FBI agent. When the other agent is brutally murdered, Beamon's attempts to trace the man who fingered them leads him into an international criminal conspiracy that may have roots in the American government. As events plunge him into a river of deceit, he is forced to address the most important question of his life: What makes a crime a crime?