The European Union (EU) has certainly reduced its influence in the global economic affairs. Despite the fact that it unites 28 nations, including the former great powers such as the United Kingdom, Germany, France and Italy, the political and economic power of the community has considerably decreased starting with the second half of 2000s. The present research is undertaken with the aim of increasing the readers' awareness regarding the necessity of enforcing the EU economic security through consolidating the authority of the supranational bodies in relation with national representatives. The objectives to be reached in this regard include assessing how much the governance efficiency alternations among the EU member countries influence the efficiency of the single market in a globalised society. It was found that several processes determined the decline of Europe's strength including raising globalisation and increasing competition, economic weaknesses of the EU which worsened during the crisis, stagnation of the integration process, feeble leadership and lack of resoluteness, especially in the most developed EU nations, declining adherence to "core" values, migration crisis, little political commitment to protecting EU's citizens' interests, and countries' individualism in promoting key initiatives.