1.   A currency union can not exist without perfect capital mobility across the union and a fully integrated financial sector.

2.   His economics minister is talking of currency union between the two Germanies by July.

3.   Shops there got off to a bad start in the weeks after currency union, many demanding cut-throat prices.

4.   The theoretical foundations for a currency union among independent nation-states are not strong prima facie.

5.   ...the question of which countries should join the currency union.