Less Hair
I think you will discover that it was something along the lines, that he ordered fighter to assist (escorting them in and later out of Belarus) - And Lukashenko did this out of his gracious great heart to prevent a terrorist attack in Lithuania / Vilnius.
There is some disconnect here in the logic / logical thinking, so Lukashenko (ATC Belarus), convinced the RYR crew, that they rather have the RYR flight with a bomb divert over Belarussian land / city to a Belarussian airport, risking that the aircraft / bomb could detonate over Belarusia, in a flight that was at least double the distance from diverting to Kaunus in Lithuania.
Normal SOP's for bomb threat is LAND AS SOON POSSIBLE, so the question is why did the crew not follow this SOP? Why would you risk flying double the time you needed into a country that is run by a dictator, and the issue was only if going to Vilnius according to Belarus ATC transcript.
When did ATC dictate what actions you take during a Mayday?
I thought a Mayday call meant that you call the shots, what is the safest outcome for the flight / crew / passengers? Judging by the outcome, this was not the safest option, and this is mainly due to lack of equipment on the aircraft for the crew to get the information they needed, to know they were actually being hijacked by Lukashenko's KGB.
This shows how easy now for a potential future terror attack, by being able to get access the ATC frequency, you can give ATC orders to an aircraft that will go unchallenged, because the airline has no way to assess a security threat while they are in the air, as they are unable to contact their airlines security team, who would involve assessing the credibility of such a security risk.