Translate the following English sentence to French:
"At the meeting, however, no further details were given as to how flexibility can apply also to the second pillar, that is to say, to a common foreign and security policy."
On n'a pourtant pas défini de quelle manière la flexibilité pourrait concerner également le deuxième pilier, c'est-à-dire la politique étrangère et de sécurité commune.