Possible Clues:

• Is one armed with water pistols?
• - - diplomacy, foreign policy supported by threat of military force
• Small armed ship
• Port threatener
• Naval symbol of aggression
• A fire ship as part of diplomacy
• Vessel (involved in a type of diplomacy?)
• Vessel peacekeepers originally boarded during attack
• Fire on the water for out-of-date diplomacy
• Small military ship