Brussels, 22/03/2012 (Agence Europe) - It took more than two decades, from the Maastricht Treaty in 1991 to the budget pact of 2012, to achieve the economic arm of monetary union, but something similar occurred in 1985 with the Single European Act, which did not cover co-decision for legislation and which was not really fully introduced until the Lisbon Treaty came into force in 2009, explains Pietro Calamia, Italy's former Permanent Representative to the EU, in issue 1046 of Lettera...