Fair and equitable treatment/Minimum standard of treatment, including denial of justice claims
Full protection and security, or similar
Umbrella clause
National treatment
Most-favoured nation treatment
Arbitrary, unreasonable and/or discriminatory measures
http://globalarbitrationreview.com/news/article/15191/tribunal-constituted-ukraine-claim/ (requires subscription)
http://www.lw.com/news/latham-secures-significant-victory-for-ukraine-in-high-profile-icsid-arbitration
http://www.iareporter.com/articles/20110414_1 (requires subscription)