In the fourth book of the series, Merchants Without Borders, Natalya Rudakolva pushes Stefan Syn Volstoka out of the picture as the controller of the Eastern Russian Coast Sturgeon Fishery Business, she wants to be the queen of caviar. She seeks revenge for Matt Marov not having supported their operation with guns and motorcycles regardless of the embargo. She attacks Matt and his gun works in the United States. Her greed for power far exceeds any reason or strategy in her actions. Matt is forced to seek mercenary help to sustain his operational safety and welfare. Murder, defense, and outright war run ramped during the world's embargo of Russia.