https://rsf.org/en/ranking_table
http://carnegieeurope.eu/strategiceurope/72634?lang=en
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/695321/An_inspection_of_exit_checks.pdf
https://www.unhcr.org/60b638e37/unhcr-global-trends-2020