Fair and equitable treatment/Minimum standard of treatment, including denial of justice claims
Arbitrary, unreasonable and/or discriminatory measures
https://globalarbitrationreview.com/article/spanish-healthcare-group-takes-colombia-icsid (requires subscription)
https://www.iareporter.com/articles/spanish-insurance-investors-make-good-on-earlier-threat-to-lodge-icsid-arbitration-against-colombia/ (requires subscription)