
https://www.politico.eu/article/cuban-mercenaries-join-russian-army-ukraine-war/

https://medium.com/@SmallArmsSurvey/urban-violence-or-urban-peace-why-are-some-cities-safer-than-others-8626435dd5c7

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/669958/DefenceIndustrialPolicy_Web.pdf