Related Clues:

• Long, drawn-out attack
• Military campaign
• Military strategy
• Fort fight
• Military attack
• ___ of Leningrad, 1941-44
• Extensive attack
• Steven Seagal film, ''Under ___''
• Longtime bother
• Prolonged military attack
• Resistance reducer
• Ongoing trouble
• Persistent attack
• WWII Leningrad event
• Prolonged assault