http://www.mofa.go.jp/files/000160266.pdf?utm_medium=email&utm_source=newsletter&utm_term=170527&utm_campaign=bop
https://ukandeu.ac.uk/the-russia-china-relationship-the-perils-of-a-friendship-with-no-limits/
https://www.russia-briefing.com/news/the-real-impact-of-western-sanctions-upon-russia-and-2023-24-forecasts.html/