Identify and explain the focal points of disagreement between realism, liberalism, and historical structuralism.

Answer this QUESTION in 6 full pages:

Three prominent International Relations theorists claim that “…the evolution of IPE [International Political Economy] is better described in terms of focal points of contestation [or disagreement]…than as an all-out war leading to the victory of one general orientation over another.” Identify and explain the focal points of disagreement between realism, liberalism, and historical structuralism. In your opinion, which approaches—if any—is most persuasive? Why?