Book Review: Hard Choices, Soft Law: Voluntary Standards in Global Trade, Environment and Social Governance by John Kirton and Michael Trebilcock (eds.) - European Energy and Environmental Law Review View Book Review: Hard Choices, Soft Law: Voluntary Standards in Global Trade, Environment and Social Governance by John Kirton and Michael Trebilcock (eds.) by Nia Davies - European Energy and Environmental Law Review Book Review: Hard Choices, Soft Law: Voluntary Standards in Global Trade, Environment and Social Governance by John Kirton and Michael Trebilcock (eds.) Nia Davies 14 6 European Energy and Environmental Law Review