489
During their first war summit on March 27 at Camp David , Blair and Bush became divided over what a role the United Nations will play in post war Iraq , when Bush gave no positive reaction to Blair ' s suggestion of a strong UN role .
 None
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:
 None