Leo Moceri and Danny Greene Cleveland Bombing Wars.

Greene or Nardi gave Ritson the green light to eliminate Leo Moceri. I think Hans Graewe was riding shotgun.
Killing Moceri forced Licavoli to get off his complacent azz and go to war.
The Cleveland Mafia flexed their muscle and won the battle with Nardi/Greene.
But going to war vs Nardi/Greene led Licavoli to make some aging and certinally not young guys like Calandra and Lib.
the 2nd part was the decision to whack Danny Greene.
After Nardi got it, he was a non factor. They really feared Nardi.
Greene was gonna move to Texas any how.
They should have let Greene go on his way.
But Ferritto and Cisternino messed up equally in the murder of Greene.
the getaway and Joe Blow car were registered sequentially.
Ferritto forgot to destroy important paperwork.
Ferritto flipped and the rest is history. House of cards came tumbling down with some assistance by Jimmy Frattiano.