Full protection and security, or similar
Arbitrary, unreasonable and/or discriminatory measures
Umbrella clause
Indirect expropriation
http://globalarbitrationreview.com/news/article/34469/new-claims-icsid/ (requires subscription)
http://globalarbitrationreview.com/article/1142852/italy-denied-security-for-costs-in-solar-claim (requires subscription)
https://www.iareporter.com/articles/italy-fails-to-secure-summary-dismissal-of-eskosol-solar-case-despite-protests-that-it-defeated-identical-ect-claim-by-investors-majority-shareholder/ (requires subscription)
http://globalarbitrationreview.com/article/1142250/solar-power-investor%E2%80%99s-claim-against-italy-survives-threshold-challenge (requires subscription)
https://www.iareporter.com/articles/arbitrators-express-doubts-about-a-right-to-security-for-costs-but-bankrupt-claimants-after-the-event-insurance-policy-obviates-any-need-to-rule-definitively-on-respondents-request/ (requires subscription)
https://www.transnational-dispute-management.com/downloads/18883_Case_Report_Eskosol_v_Italy_2017.pdf
https://www.iareporter.com/articles/analysis-unpacking-the-eskosol-v-italy-decision-on-eu-related-jurisdictional-issues/ (requires subscription)
https://globalarbitrationreview.com/insolvency/insolvent-solar-investor-fails-in-claim-against-italy (requires subscription)