Earlier quoted context omitted.
The dictator doesn't have to be multiple countries, but a dictator for at least a while. Would someone who was a dictator for a day but was otherwise a civil servant for 30 years be called a dictator? I wouldn't say so. You can say he was a dictator for a short time, but not just "a dictator" without that context.
Wouldn't it be correct to call him a dictator the day that he was a dictator? My point being is that as long as LV are engaged in what you say is "one act of trolling", then they can be called trolls.
Dictators are a really poor example here, often it is not quite as clear-cut and there is no point in time you can say then he became a dictator. Not even in hindsight, it is usually a rise to power over years until their power becomes absolute.