Related Clues:

• Opposite sides of a fight
• The other guys
• Ill-wishers
• People on a Nixon list
• They're against each other
• They're against us
• They're not for you
• Parties far from festive
• North and South Korea, e.g.
• The Blue and the Gray. e.g.
• Subjects of a Nixon list
• The Blue and the Gray
• Opposing teams
• They're opposed
• The North and the South, in the Civil War