
https://wiiw.ac.at/are-western-trade-sanctions-effective-dlp-6981.pdf

https://www.jean-jaures.org/publication/republique-democratique-du-congo-rwanda-la-pax-americana-est-elle-viable/

http://www.aviationlaw.eu/wp/wp-content/uploads/2013/09/Freedoms-of-the-Air-Explained.pdf