One person made a decision.
And that started a 11+ years of propaganda, political acrobatics, war, manipulation of the masses, etc etc etc. Lots of things that are good for that one person to be able to stay in power.
Back to Venezuela and Trump - it's possible that Trump is testing grounds for a similar play. If he finds an enemy he can keep fighting for a long time - he will stay president for all that time. Elections won't matter. People will vote for those who fight "the enemy". You just need to create an enemy.