In this task, you are given a sentence in English and your task is to translate it into Spanish. In translation, keep the numbers and capitalization (capitalize only the first word of each sentence and name).

This, however, presupposes that we set up an internal scheme quickly in order to be able to guarantee the confidentiality of sensitive documents.
Ello implica que debemos adoptar rápidamente un reglamento interno para poder garantizar la confidencialidad de los documentos sensibles.

I can only emphasise that these are the really hard nuts that finally need to be cracked.
¡Sólo puedo decir que estas son las nueces duras de verdad que hay que cascar de una vez por todas!

We do not want to build a Europe of cities alone.

No es nuestro deseo construir una Europa exclusivamente de ciudades.