https://www.progressivepolicy.org/blogs/trade-fact-of-the-week-americas-non-mfn-tariffs-on-natural-resources-are-usually-low/
https://www.wto.org/english/tratop_e/envir_e/trade-climate-change_info_brief_no7_e.pdf
https://ecfr.eu/wp-content/uploads/Measured-response-How-to-design-a-European-instrument-against-economic-coercion.pdf