而该问题的核心则是各成员国之间的核心利益冲突 — — 欧洲各大武器厂商之间的竞争，还有防务市场的战略重要性（尤其是牵涉到各国外交政策的时候 ） — —以及特别强调增强团结与磋商机制的里斯本条约
At the heart of the matter is a conflict between the individual member states’ national interests – the competitiveness of European defense-related companies and the strategic importance of defense markets when linked to national foreign policy – and the Lisbon treaty, which refers specifically to enhanced solidarity and consultation.