Possible Clues:

• Can't have been so proud without a crown
• Occupying force
• Attacker from outside
• Proud to have lost his collar?
• Attacker within, against a duke and monarch
• One illegally entering wood lacks time to seize state
• Ivan the terrible meets the German who crosses the border
• Person making hostile takeover has driven frantically around area
• Attacker, one unfortunately driven out
• Raid participant