https://blogs.imf.org/2019/12/17/new-data-on-world-debt-a-dive-into-country-numbers/?utm_medium=email&utm_source=govdelivery
http://www.kas.de/wf/doc/kas_450-2190-2-30.pdf?170424105349
https://www.aspistrategist.org.au/the-middle-easts-marriages-of-convenience/