One part of a larger whole. Today's subject will be China, because this is the clearest and most topical example, but for my money, the following considerations are somewhat more general. They refer to trade policy being taken on board not as an isolated field subject to the simplistic rule of the opening of borders and constituting an end in itself, but as one part of a larger whole which encompasses industrial policy (see this column of 25 February), environmental protection, safeguarding...