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Chances are the Iraqis are going to continue to stick with what we ' ve seen before , irregular forces blending in with civilians trying to attack U . S . forces , some more of these suicide attacks which are going to be problematic for our troops .
 forces: attacker; 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:
 forces: attacker; forces: target