9 December 2018 — Strategic Culture Foundation
On November 25, two artillery boats of the Gyurza-M class, the Berdiansk and Nikopol, one tugboat, the Yany Kapu, as well as 24 crew members of the Ukrainian Navy, including two SBU counterintelligence officers, were detained by Russian border forces. In the incident, the Russian Federation employed Sobol-class patrol boats Izumrud and Don, as well as two Ka-52, two Su-25 and one Su-30 aircraft.