What about forcing the plane of the Bolivian president to land in 2013; what that justified? Lukashenko is doing what "international community" did then -- trying to catch an inconvenient person that the state cannot legally reach otherwise.
I am not claiming that such things should be left with no response. In fact, I suspect this might hasten Lukashenko's downfall (quod licet Iovi, non licet bovi), but he is just taking a page from the "western civilization" playbook. My 2c.