The president's dossier - James A. Scott

Max Geller: Target of the Kremlin, MI6, and the CIA. Fired for bias against the U.S. president, ex-CIA Russia expert Max Geller gets a chance to redeem his reputation and make a fortune when he is hired to investigate the president's incriminating ties to Moscow. Jill Rucker, an undercover CIA agent, is assigned to work with him -- and she does -- when she's not pursuing her own conflicting goals.
The search takes them to England, Russia, Panama, and Switzerland. Along the way, Max runs afoul of British intelligence by inadvertently compromising two of its operations. He gets help from an anti-Russian underground cell in Moscow, is assisted and threatened by the Russian mafia, exposes a massive Russian-American money laundering scheme in Panama, and uncovers a plot to protect the president from mounting accusations threatening his presidency.
Close behind is Zabluda, a Kremlin assassin, who means to kill them and their sources and destroy evidence incriminating the president. Max discovers that he has been betrayed by his former boss, his current employer, and his girlfriend. Seeking revenge, he takes on a powerful Washington law firm, the CIA, and the Russians.
Max Geller is the spy who went out in the cold -- and no one wants him to come in and tell what he knows.
Perfect for fans of Daniel Silva and Nelson DeMille.