Earlier quoted context omitted.
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Russians do not do that. It is contrary to our culture. There was a lord (knyaz) in old times who even warned enemies that he is going to attack them. Of course it is not as advantageous as a covert approach. But it is very Russian. When you hear otherwise it is those other entities targeting you, that's all.
Talking about stuff from early Middle Ages (князи), it has zero relevance to modern culture. Russia is anything but isolationist as it should be clear since 2014/2022.