Pierpaolo Barbieri : Nobel Peace Prize awarded to European Union stirred controversy . He says the EU helps bring peace after a century of war and dictatorship . Europe is the world 's largest market , offering an arena for trade and commerce , he says . Barbieri : Europe financial crisis and need for reform , but EU is still worth it .
Pierpaolo Barbieri : Nobel Peace Prize awarded to European Union stirred controversy . He says the EU helps ensure peace after a century of war and dictatorship . Europe is the world 's largest market , offering an arena for trade and commerce , he says . Barbieri : Europe financial crisis reveals need for reform , but EU is still worth having .