War Machine: Destiny in the Shadows Series Book One

Blackmailed, cornered, and screwed. That's what happens when you get caught... If you're an assassin, that is.
When a contract killer teams up with a four-star general to track down an elusive terrorist group intent upon detonating a nuclear bomb inside their city, sparks fly and not of the romantic variety. Racing against the clock through the desert, facing harrowing odds and dire consequences should they fail, they discover that the terrorists aren't always the ones to fear... and may not...