533
WASHINGTON _ Having punched through severely depleted Republican Guard divisions that formed Baghdad ' s outer defensive ring , U . S . Army and Marine forces are likely to pause again to test the Iraqi capital ' s inner defenses and waall but evaporated under the weight of the U . S . assault .
 forces: attacker; divisions: 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; divisions: target