SISKO: You're Klingons!
BREEN: Yes, Captain. We are descended from warriors of the Second Empire, we conquered the Breen centuries ago.
BREEN LEADER BRANDISHES [BREEN DISRUPTOR PISTOL]
BREEN: Unfortunately you won't be reporting this discovery to your superiors.
SISKO: I've never met Klingons before who murder unarmed civilians, destroy helpless ships, and hide their faces in battle. What would Kahless think?
For every Klingon soldier killed, two hundred civilians will be executed.
Ah, Klingons. So fond of honor when it suits them, and not when it's inconvenient.