What is the fine-grained topic of the following text: Supplementing these candid vox pops with contextualizing analysis from scholars including Noam Chomsky and Saskia Sassen, Brexitannia is essential viewing for anyone seeking a clearer understanding of the forces, both micro and macro, that animate our fraught geopolitical moment. Only return the topic.
Analysis of Brexit's geopolitical impact through the documentary "Brexitannia"