The Kremlin's Candidate (The Red Sparrow Trilogy)

In the dazzling finale of the Red Sparrow Trilogy, Russian counterintelligence chief Dominika Egorova and her lover, CIA agent Nate Nash, must find a Russian agent about to be appointed to a high office in the US government before Dominika is exposed as a CIA asset. The lines of danger converge on the presidential palace on the Black Sea during a power weekend with Putin's inner circle.