By Gordon Brown
The views expressed are his own.
It was said of European monarchs of a century ago that they learned nothing and forgot nothing. For three years, as a Greek debt problem has morphed into a full blown euro area crisis, European leaders have been behind the curve, consistently repeating the same mistake of doing too little too late. But when they meet on Sunday, the time for small measures is over. As the G20 found when it met in London at the height of the 2009 crisis, only a demonstration of policy intent that shows irresistible force will persuade the markets that leaders will do what it takes. An announcement on a new Greek package will not be enough. Nor will it be sufficient to recapitalize the banks. European leaders will have to announce a comprehensive -- around 2 trillion euro -- finance facility; set out a plan to fundamentally reform the euro; and work with the G20 to agree on a coordinated plan for growth.