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Russian President Vladimir Putin ' s summit with the leaders of Germany and France may have been a failure that proves there can be no long - term " peace camp " alliance following the end of war in Iraq , government sources were quoted as saying at the weekend .
 Vladimir Putin: entity; leaders: entity
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: meet 
  Option: entity, place 
Text: {0} 
Answer:
 Vladimir Putin: entity; leaders: entity