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Two security stories from 13 August 2026
Summary
A reported killing in Sevastopol and a foiled plot in Warsaw drew attention to Russia's reach beyond the front line.
What did the reports of 13 August 2026 reveal about the shadow side of the Russo-Ukrainian war? Looking back at 15 August 2026, two stories from two days earlier stood out, one in occupied Crimea and one in the Polish capital.
A reported killing in Sevastopol
On 13 August 2026, Robert Shagaev, a Russian military officer, was reported to have been killed by an explosive planted in a trash can in Sevastopol. Shagaev had commanded the submarine Zaporizhzhia before defecting to Russia after its annexation of Crimea.
The Zaporizhzhia (U-01) is a Project 641 (Foxtrot-class) diesel-electric submarine. It was the only submarine of the Ukrainian Navy until Russian forces seized it in March 2014, during the annexation of Crimea. Russia has occupied Crimea since 2014, and the peninsula served as a base for the occupation of parts of Kherson and Zaporizhzhia oblasts after the start of major hostilities on 24 February 2022.
A plot foiled in Warsaw
Also on 13 August 2026, Polish prime minister Donald Tusk said that Polish authorities, working with U.S. services, had foiled an alleged Russian plot to kill a Ukrainian-American citizen in Warsaw. A suspect accused of acting for Russian intelligence was arrested. Tusk said it was the first such Russian-directed plot in another NATO country.
The case belongs to a wider pattern in the war. Before and after the 2022 invasion, a number of Russian citizens and people of other nationalities working for Russia have been publicly identified as spies or agents of the Federal Security Service (FSB), the foreign intelligence service (SVR) or military intelligence (GRU), each with its own remit.
Two different theatres
The two events were separate, and the reports did not link them. One involved a former Ukrainian naval commander who had switched sides, reportedly targeted with a bomb in a Russian-held port city. The other involved an alleged plan to kill a Ukrainian-American in a NATO capital, stopped through cooperation between Polish and U.S. services.
Together they showed that security concerns in the war extended well beyond the front line, from occupied Crimea to a NATO member state, and that intelligence work and cross-border cooperation among allies were part of the picture on 13 August 2026.
