Most-favoured nation treatment
Full protection and security, or similar
Indirect expropriation
https://www.iareporter.com/articles/rwanda-faces-new-investment-treaty-claim/ (requires subscription)
https://globalarbitrationreview.com/article/1171004/rwanda-faces-second-icsid-claim (requires subscription)
https://www.iareporter.com/articles/analysis-icsid-tribunals-finds-that-failure-to-grant-long-term-mining-concession-in-rwanda-did-not-amount-to-a-treaty-breach/ (requires subscription)