United Kingdom
Arbitrary, unreasonable and/or discriminatory measures
Umbrella clause
Transfer of funds
Indirect expropriation
https://globalarbitrationreview.com/article/1228360/azerbaijan-hit-with-claim-over-oilfield-sale (requires subscription)
https://www.iareporter.com/articles/azerbaijan-faces-new-icsid-arbitration-over-failed-modernization-of-local-oil-field/ (requires subscription)