What’s on the Table in the Euro Overhaul

The euro has survived numerous trials in recent years, including the bailout of 5 of the currency union’s 19 members and a near-exit by Greece. The Maastricht Treaty that underpins the common currency is 25 years old, so there’s support in many European capitals for a reboot. European Union leaders will meet in Brussels on Dec. 15 to lay out a road map for euro zone reform. Here’s a look at the most important ideas on the table.

The proposal: The idea is to build a pool of money that countries could tap during periods of economic or financial stress—for instance, to boost investment in a downturn. Access to the funds, which may be administered by a euro finance minister (a new position), could be contingent on states adhering to the bloc’s rules on deficits and debt.