https://www.openmarketsinstitute.org/publications/how-to-fix-supply-chains-break-the-chain
http://www.iata.org/publications/economic-briefings/value-of-air-cargo-2016-summary.pdf
https://www.elysee.fr/admin/upload/default/0001/11/8143fbb609fe8fa002cd7a36deccc1a219766cda.pdf
https://www.aspistrategist.org.au/us-antipathy-towards-free-trade-could-leave-australia-in-the-lurch/