https://www.aicgs.org/publication/refugees-terrorism-and-a-failing-security-architecture/
https://www.gainesvilletimes.com/opinion/letter-why-mexico-border-wall-probably-waste-time-money/
https://rusi.org/explore-our-research/publications/commentary/giving-raf-typhoons-ukraine-would-be-very-expensive-symbolic-gesture
https://vuosikirja.supo.fi/documents/62399122/66519032/SUPO+Yearbook+2022.pdf/109369e6-13c3-ee60-474e-eff9c4d44217/SUPO+Yearbook+2022.pdf?t=1679642311270