Related Clues:

• Breakup
• Break (m)
• Start of a breakup
• Falling-out result
• Big break
• Reconciliation preceder
• Dam damage
• Friendship ender
• Break in diplomacy
• Diplomacy breakdown
• Fissure, cleft
• Violation, maybe of the peace
• Cleft or fissure
• Breach or crevasse
• Failure to follow the rules