Full protection and security, or similar
Arbitrary, unreasonable and/or discriminatory measures
https://globalarbitrationreview.com/article/1170576/spanish-energy-company%E2%80%99s-claim-against-guatemala-gets-under-way (requires subscription)
https://www.iareporter.com/articles/kaufmann-kohler-in-chair-for-new-effort-by-iberdrola-to-sue-guatemala-under-spanish-investment-treaty/ (requires subscription)
https://globalarbitrationreview.com/iberdrola-barred-bringing-second-claim-against-guatemala (requires subscription)