Related Clues:

• Fight
• Fighting
• Prolonged attack
• General activity
• Dove's aversion
• Military operation
• Kind of dance or bride
• Military blockade
• Failure of diplomacy
• Prolonged blockade
• Card game
• Simple card game
• General Assembly topic
• See 9-Across
• Word that can follow the start of 15-, 18-, 34-, 48- or 55-Across