They were both close to Kane growing up. In addition to their personal relationship with him, they recognize he is a neighborhood hero. With that kind of respect, Kane has the soldiers behind him to start and, more importantly, win a war.
On the other hand, Louie and Jerome would rather meet violence with violence. So while Leon sits down with Kane, Louie propositions Officer Buckely and Jerome searches for Peaches. And, of course, Franklin has personal and professional business to handle in the midst of it all.
Leon’s encounter with Kane is relatively peaceful. He offers Kane an explanation for Kevin’s murder, highlighting, Franklin didn’t have many options. Kevin turned against them and put everyone’s life in jeopardy when he decided to take on the Mexican cartel single-handedly. Leon understands nothing can bring Kevin back; nonetheless, he can help Kane provide for his family. In lieu of trying to kill each other, he suggests, they sell dope together. Kane is down to do business and starts with ten keys.