More interesting imagery from Konstantin Lazarev, operators with what may be Defender II carriers, featuring Universal Lattice Molle strapping.
This is a very cool plate carrier family. If I remember correctly, the original MC Toys FSB Officer with the Vant heavy shield came with a black version of this exact vest.
Looks like Belarus
At first glance it looks like the IRT Defender II without groin and throat protection.
MCToys M-051 FSB Alfa Group