https://www.politico.com/news/magazine/2023/02/21/joe-bidens-ukrainian-zelenskyy-00083683
http://www.cesifo-group.de/ifoHome/publications/working-papers/CESifoWP/CESifoWPdetails?wp_num=6430&CESifoWP.search=+
https://www.foreignaffairs.com/united-states/economic-security-state-farrell-newman