Cooperation on matters related to the EU’s Economic and Monetary Union (discipline and solidarity) should be obligatory. The involvement of most, or all, current and future eurozone countries would enhance the group’s coherence, making it easier to win public support for cooperation in other areas.
参与过将必须决定是否做出共同政策承诺，也可以保留权利，选择逐项参与。与欧盟的经济和货币联盟（纪律和团结）相关的问题上的合作应该是义务的。大部分（甚至所有）欧元区国家和准欧元区国家的参与能增强欧元区的凝聚力，更容易获得其他领域合作的公众支持。