Book Review: C. Henckels, Proportionality and Deference in Investor-State Arbitration (Cambridge University Press, 2015) - European Investment Law and Arbitration Review View Book Review: C. Henckels, Proportionality and Deference in Investor-State Arbitration (Cambridge University Press, 2015) by - European Investment Law and Arbitration Review Book Review: C. Henckels, Proportionality and Deference in Investor-State Arbitration (Cambridge University Press, 2015) 1 1

European Investment Law and Arbitration Review