Arbitrary, unreasonable and/or discriminatory measures
Umbrella clause
Customary rules of international law
Full protection and security, or similar
http://www.tekfen.com.tr/docs/Yatirimci_Iliskileri/ozeldurum/en/2015/TKFEN_Announcement_18_06_2015.pdf
http://www.tekfen.com.tr/pdf/en/2016annual/FR2016.pdf
http://www.tekfen.com.tr/docs/Yatirimci_Iliskileri/TKFEN31032017ENG.pdf
https://www.iareporter.com/articles/as-libya-begins-to-see-wave-of-investment-treaty-arbitrations-at-least-seven-turkish-bit-claims-at-icc/ (requires subscription)
https://www.iareporter.com/articles/investigation-as-fight-continues-over-1bil-award-libya-facing-at-least-a-dozen-investment-treaty-arbitrations-possibly-more-in-aftermath-of-arab-spring/ (requires subscription)
http://globalarbitrationreview.com/article/1138857/pca-ends-standoff-over-islamic-treaty-claim (requires subscription)
http://globalarbitrationreview.com/insight/the-middle-eastern-and-african-arbitration-review-2016/1036966/the-effects-on-arbitration-of-the-arab-spring (requires subscription)
https://www.iareporter.com/articles/icc-tribunal-weighs-in-with-40-million-award-arising-out-of-investment-project/ (requires subscription)
https://globalarbitrationreview.com/article/1176531/libyan-entity-ordered-to-pay-in-man-made-river-dispute (requires subscription)
https://www.iareporter.com/articles/libya-wins-one-and-loses-one-as-new-bilateral-investment-treaty-awards-are-rendered/ (requires subscription)
https://www.iareporter.com/articles/uncovered-in-previously-unseen-treaty-award-arising-out-of-muammar-gaddafis-great-man-made-river-project-arbitrators-unanimously-decide-that-they-can-hear-customary-international-law-claims/ (requires subscription)