541
`` Before going in ( with a full assault ), you have to decide if it ' s worth the risks , and ... you have to know who ' s there in the way of Iraqi forces and the amount of potential damage to civilians ,'' he said .
 None
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: attack 
  Option: victim, attacker, place, target, instrument 
Text: {0} 
Answer:
 None