<P> Bolivia and Ecuador have expressed interest to join the bloc . However, their membership in the Andean Community of Nations complicates such attempts . Peru's president Humala said in 2011 that Peru may be interested in joining in the future, but that the country was not yet ready to start the process due to economic reasons . </P> <P> Bolivia's full participation in the Mercosur bloc has been under negotiation since June 2011 . In December 2012, Bolivia signed an accession protocol to become a full member . Uruguay ratified the agreement in June 2014 . In September 2014 Argentina approved Bolivia's entry, leaving only Brazil and Paraguay left to approve the agreement . Due to objections from Paraguay that the protocol was agreed to while it was under suspension from the organization, an amended protocol was agreed to in 2015 . </P> <P> Ecuador started negotiations to join Mercosur in May, 2013 . </P>

Which of the following countries is not a member of the mercosur trading bloc