A draft copy of the agreement from last week's "make or break" summit in Brussels revealed leaders' plans for a "fiscal compact" that commits countries to keeping their primary deficits below 0.5p of GDP and debt levels below 60pc of GDP. Countries that break this "golden rule" face punishment from the European Courts of Justice. The draft says just nine eurozone countries are needed to ratify the deal, after which it will be binding on each subsequent country that ratifies it. The eight-page draft document will be discussed by member states at a meeting in Brussels on Tuesday. Despite vetoing the idea at last week's summit, Britain has been invited to join the discussions as an "observer".