The Western European Union (WEU) Member Sutes agreed at Maastricht in 1991 on the need to develop a genuine European Security and Defence Identity (ESDI) and to assume a greater European responsibility for defence matters.
Chomhaontaigh Ballstáit Aontas Iarthar na hEorpa (AIE) in Maastricht i 1991 ar a riachtanaí atá Féiniúlacht Eorpach Slándála agus Cosanta (FESC) fhírinneach a fhorbairt mar aon le freagracht mhéadaithe Eorpach as ábhair chosanta a ghabháil orthu.