Can conventional International Relations (IR) theories explain the contemporary geopolitical landscape? Are IR models useful tools for strategists?

Can conventional International Relations (IR) theories explain the contemporary geopolitical landscape? Are IR models useful tools for strategists?

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I want to write this article in a dialectical manner so that it begins with an introduction and then details the main topic as well as controversies, questions and answers and examples (I would like the focus in writing about that to be on the South Asian region “Indonesia, Malaysia, the Philippines, Vietnam, etc.”)