From an FT interview:
CP: Does Hillary Clinton’s intervention suggest that the WTO is effectively finished as the main forum for liberalising trade?
PS: Absolutely not. Absolutely not, even if those policies were pursued in an administration in the future I don’t believe that they would have that dramatic an effect. The WTO will remain an adjudicating mechanism for most disputes globally; it will remain the base for international trading negotiation. But it will certainly be a body blow to the credibility of a multi lateral institution, which above all has evidenced the age of intra-dependence, global intra-dependence that followed the collapse of the iron curtain.