Patricia Stephenson (Social Democrats)

My next question is for Professor Butler regarding the public policy derogation under the EU trade law he spoke about in his opening remarks. He said that there is no case law which clearly supports its use in this instance. I think he also said that existing case law offers no clear precedence supporting its use. I wish to talk about the word "clear" in that context. Is a caveat needed there when there is case law that may support its use and may be relevant, particularly the Rosneft judgment which deals specifically with the use of public policy exceptions?