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Question about Politics & Intrigue Bordello (see also “Foreign Cards”) - Do Breweries, Dragons, Flagships, and Cannons also lose a strength point by means of a Bordello?

Answer

No. The rule establishes that only Knights are affected.

Note: Dragons belong to the theme set "Wizards & Dragons", Flagships belong to the theme set "Barbarian & Traders" and *Cannons" belong to the theme set "Science & Progress", all are part of the Catan Card Game – Expansion Set.