Extreme Measures by Vince Flynn (Contains Affiliate Link)

Vince Flynn's thrillers, featuring counterterrorism operative Mitch Rapp, dominate the imagination of the readers everywhere. In them, Flynn captures the secretive world of the fearless men and women who, bound by duty, risk their lives in a covert war they must hide from even their own political leaders.
     Now, Rapp and his agency colleague Mike Nash may have met their match. The CIA has detected and intercepted two terrorist cells, but a third is feared to be on the loose. Led by a dangerous mastermind obsessed with becoming the leader of al-Qaeda, this determined and terrifying group is about to descend on America.
     Rapp needs the best on his assignment, and Nash, who has served his government honorably for sixteen years- first as an officer in the Marine Corps and then as an operative in an elite counterterrorism team run by Rapp- is his choice. Together, they have made careers out of meeting violence with extreme violence and have never wavered in the fight against the jihadists and their culture o death. Both have fought the was on terrorism in secret without accolades or acknowledgement of their personal sacrifices. Both have been forced to lie to virtually every single person they care about, and both have soldiered on with the knowledge that their hard work and lethal tactics have saved thousands of livers.
     But the political winds have changed in America and certain leaders on Capitol Hill are pushing to have men like Rapp and Nash put back on a short leash. And then on spring afternoon in Washington, D.C., everything changes.
     Using his insider knowledge of intelligence agencies and the military, Flynn once again delivers no all-too-real portrayal of a war that is waged every day by a handful of brave, devoted souls. Smart, fast-paced, and jaw-droppingly realistic, Extreme Measures is the political thriller of our time. (From cover flap of book)