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The group is also claiming that Islamic Jihad militants are already inside Iraq to carry out attacks against U . S . and British forces .
 militants: attacker; Iraq: place; forces: target
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:
 militants: attacker; Iraq: place; forces: target