Arbitrary, unreasonable and/or discriminatory measures
Direct expropriation
Indirect expropriation
Full protection and security, or similar
Umbrella clause
https://globalarbitrationreview.com/article/1197630/new-icsid-claims-against-argentina-and-congo (requires subscription)
https://www.iareporter.com/articles/40141/ (requires subscription)
https://ciarglobal.com/espanola-orazul-energy-presenta-arbitraje-de-inversion-contra-argentina/