2348
Clearly , as we threaten the core of the regime , which Baghdad and Tikrit represent , we believe that the likelihood of them using those weapons goes up .
 weapons: instrument; them: attacker
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:
 weapons: instrument; them: attacker