Views of Unipolarity         
  Waltz Wohlforth Ikenberry Risse
Theoretical viewpoint Realism Realism Liberalism Constructivism
Key causal mechanism balancing relative power institutional dynamics collective identities
Is unipolarity stable? No Yes  Yes, but... Yes
Are states balancing ? Yes No. Buck-passing No. Binding No. Binding
Do institutions matter? No No Yes Yes
Does liberal democracy matter? No No Yes Yes
Source of conflicts Rising powers Regional rivalries Weakened inst.? Outside sec. community