Original: The Corleones, from their compound on Long Island, go to war with the other members of the Five Families, the Tattaglias, the Barzinis, the Cuneos, and the Straccis.
Simplified: The Corleones, go to war with the other members of the Five Families, the Tattaglias, the Barzinis, the Cuneos, and the Straccis.