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" We have warned against the marginalisation of the United Nations ... and we see this aggression today plunging the world into a tunnel where one cannot see the end ," he said in a statement .
 United Nations: 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:
 United Nations: attacker