The Cotroni family is still with the Bonanno's. With Lavarone murder, the plotters might be luring Joe out, as Pat Musitano will be too paranoid to come out of hiding.
How many strong are they? Where are they located? Montreal?
Would like to see a source. There was a meeting in October 2012 in Toronto but no specification about a truce between the Cotronis and Rizzuto let alone a war between them. After this meeting Di Maulo, senior member of the old Cotroni group, was killed. Did the Cotronis sell him out in order for peace? I doubt it. Personally I don't think there was much animosity between the Cotroni and Rizzuto blood families.
Di Maulo murder could also be revenge for the murder of Sal Montagna not the Rizzutos.