2712
We don ' t think that the fighting is over yet , and so there are still options available to the regime , including the use of weapons of mass destruction .
 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