Recently, I have been reading more about the Chilean coup.
Where do you think Allende made his error that resulted in his downfall?
If you were in his position (having been elected as a socialist and successfully taken power, while in the shadow of the United States and having a military hostile to you), what would you have done differently?
Violently purge the military on day 1 the moment power is handed to you. Full purge. Replace with a people's army that is loyal to the revolution.
Execute all the wealthy land owners and their families in the middle of the night before they can escape. Divide their wealth amongst the people immediately.