Translate the following English sentence to French:
"The EU has always called for a constructive attitude to be adopted towards Cuba, as outlined in the EU' s common position, but it has to be recognised that the discussions will be complex."
L'UE a toujours plaidé en faveur d'une attitude constructive à l'égard de Cuba - la position commune de l'UE le démontre - mais il faut reconnaître que les discussions seront compliquées.