I just finished Red Sparrow: A Novel (The Red Sparrow Trilogy) thanks to a recommendation from a friend, and wow was it a great read!!
This book, published in 2013, is currently a movie getting lackluster reviews. My advice would be skip the movie and read this book instead.
Dominika, a young and talented Russian intelligence officer is, against her own wishes, sent to “Sparrow School” to learn “sexpionage” and then assigned to operate against a CIA agent, Nate Nash, to find out the identity of Nash’s mole inside the Russian government. Nate and Dominika being working each other, and eventually one of them betrays their country to work for the other. What follows is truly delightful and terrifying and is apparently realistic because the author, Jason Matthews, is retired from the CIA.