Cross-border collaboration between undertakings in the development of defence products and technologies has often been hampered by the difficulty to agree on common technical specifications or standards.
De bhrí a dheacra a bhí sé sonraíochtaí comhchoiteanna nó caighdeáin chomhchoiteanna teicniúla a chomhaontú, ba mhinic a chuirtí srian ar an gcomhar trasteorann idir gnóthais maidir le táirgí agus teicneolaíochtaí cosanta a fhorbairt.