The End of Russia’s War in Ukraine

Publishers Weekly- “Halstead’s impressive fourth Russian Agents thriller avoids the shopworn conventions of the genre…. Fans of character-driven spy novels will be rewarded.”
Russian agents are searching Ukraine for a missing nuclear warhead. America suspects the warhead wasn’t really stolen, and its detonation a pretext to let Russia seize Ukraine. Will the agents find the warhead before it is used, and starts WWIII?