
https://www.progressivepolicy.org/blogs/trade-fact-of-the-week-americas-non-mfn-tariffs-on-natural-resources-are-usually-low/

https://www.mckinsey.com/mgi/our-research/geopolitics-and-the-geometry-of-global-trade

https://ecfr.eu/wp-content/uploads/2023/04/The-art-of-vassalisation-How-Russias-war-on-Ukraine-has-transformed-transatlantic-relations.pdf