Between Shadow and Soul by M. L. Buchman

-White House Protection Force story #2-

 Colonel Michael Gibson left the field after twenty years to take command of Delta Force. Two years later he wonders at what mental aberration made him do it. A lifelong warrior, White House and Pentagon politics are now his battlefield, not directing operations as he should be. With a child on the way, his normal mission plans for survival are all failing him.

 A lifetime ago, retired spy Miss Watson, turned White House librarian, gave her all for her country. Her one regret? Betraying the Soviet general she fell in love with. Betraying him to his death.

 Perhaps together, with some help from their young friend Dilya, they can find the answers lost Between Shadow and Soul.