When reading different news outlets (e.g. Associated Press, CNN, Reuters) it seems the west is focused on threatening Russia with action should it decide to go forward with the expected (from the west point of view) invasion of Ukraine.
In last days, some governments (United Kingdom, United States) have pushed forward hypothesis on how that invasion would occur, including a potential push from Belarus to Kiev, with Russia taking advantage on their forces stationed there for the maneuvers with Belarussian forces.
My question is: Considering Belarus is an independent country, and given that the supposed push to Kiev would begin with Russian troops pushing through Belarus - Ukraine frontier (which would require Belarussian collaboration or at least inaction), why is the west not threatening the current Belarussian president Aleksandr Lukashenko with sanctions or repercussions too?
For what I've seen in western media, there is a distinct lack of references to Belarussian involvement other than the joint maneuvers with Russia, but no explicit mention at all about it being a required complicit in any invasion of Kiev, despite how obvious it seems.