The Splinter

"Prague, Czech Republic. A Russian assassin is activated to kill seemingly unconnected female staffers at the US embassy. What emerges is a plot as complex as it is terrifying. Against a backdrop of escalating Russian invasion preparations, a Romanian kill squad, a Kremlin honeytrap, and a Soviet-era biological weapons victim converge on an unsuspecting city, and an unprotected embassy with deadly intent" -- Amazon.com