To clarify the implications for Western readers who don't know how 'Eastern' state media works - it would be expected that media like RT/Simonyan would comment only the "proper" opinion and so on sensitive geopolitical issues the news agency can express a strong opinion only when Kremlin has decided on what the proper opinion is, they don't have the authority to decide on their own, the foreign ministry decides the proper message.

In earlier cases with genuinely surprising events they have refrained from commenting for sometimes quite a long time. The fact that they congratulate Lukashenka so quickly suggests that they were able to get a rapid confirmation from officials that this should be promoted instead of condemned, and it suggests that more likely than not this wasn't a surprise for Kremlin, that they were informed beforehand or perhaps even participated in making that "brilliant special operation" happen.