Too Many Assassins - Agent (Rom)antics, #3

Svetlana Simonov of the government's top-secret Omega Force is sent from Washington D. C. to Kiev, Ukraine, to assassinate an international drug dealer, Boris Antonich, to put his organization out of business and give him the death sentence he so richly deserves. Unbeknownst to her, that is exactly the same assignment that Dmitri Kuzetsov, top assassin for Russia's infamous intelligence agency, the GRU, has been given.
Svetlana and Dmitri-natural deadly enemies-must become the unlikeliest of allies in their shared assignment. Svetlana and Dmitri soon find themselves working side by side in their international search for the cunning and elusive drug kingpin. During the hunt for their prey, these two secret agents find their unquenchable passion for each other runs red-hot as savage violence and non-stop action grips them every step of the way.