i need to understand this question in ir

im looking to see 400-500 words each question. essay format.

  • Explain the similarities and differences between Classical realism (Morgenthau) and Neo-realism (Waltz and Mearsheimer).
  • Contrast and compare ideal (classical) liberalism and neo-liberalism, and discuss whether they have been instrumental to explain the structures of the international system since 1945.
  • By identifying its key actors and main features, determine and assess the degree of polarity within the international system since 1991.