While more and more young Russian/CIS business people speak and are comfortable expressing themselves in a foreign language, or foreign languages, the great majority of senior decision makers do not and are not. Many understand English, but in formal situations are not comfortable about using it. The inability to communicate smoothly and effectively can doom any negotiation. This is not something to think about at the last minute and it is not a job for amateurs.
Prior Group team includes experts with PhD degrees in Linguistics and Culture from leading universities experienced in your language field, Kiwi version of English and Kiwi realia, people who will be on your side. You will seldom make a better investment.