Lybia is more of a mess than under Qaddafi, which means the issues with migration to Europe have worsened and the Lybians themselves are worse than they were. Same for Iraq. I won’t get into Syria since that wasn’t really a straight military intervention.
Yea, what Belarus really needs now is a good civil war, so that Putin can annex more territory on one side and we can create a new border that will be forever disputed. Or, as alternative, we can have them be the casus belli for thermonuclear war between NATO and Russia, that will work great.
Or you know, we can wait. Worst case scenario, Lukashenko sooner or later will die. Best case, enough of his security apparatus will decide he’s not worth propping up anymore. Either way, no guns required.
Interventions in Iraq, Lybia and Syria can be seen as failures if we consider the bold goal to bring democracy to the Middle East. But at least these countries don't attack other countries any more - ISIS as evil as it is can't cause as much harm as these could.
In any case I guess with Eastern Europe it's more likely to work like it did in Yugoslavia than in Middle East. Belarus has really strong civil society, all they are missing is really some guns.