Under the guise of a journalist, the assassin, Artur Denisultanov-Kurmakayev, tried to murder Ms. Okuyeva and her husband, Adam Osmayev, Ukraine’s Interior Ministry said.

The plot went awry because Ms. Okuyeva was also armed, and the details of the attack and its aftermath are now shedding light on Kiev’s role as a testing ground for what Ukrainian officials say are hybrid war activities by Russia, including assassinations.
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