https://www.project-syndicate.org/commentary/germany-european-defense-free-riding-by-adam-tooze-and-shahin-vallee-1-2018-05?utm_source=Project+Syndicate+Newsletter&utm_campaign=beb150cda9-sunday_newsletter_20_5_2018&utm_medium=email&utm_term=0_73bad5b7d8-beb150cda9-105765449
