In this task, you are given a sentence in the English language and your task is to convert it into the Swedish language. In translation, keep numbers as it is and make it sentence case (capitalize only the first word of each sentence and noun).

The most important issue with regard to this is internal differentiation within the Union.
Den viktigaste frågan som bör läggas till är unionens interna differentiering.

The unilateral decision by Belgium to re-establish border controls is a clear illustration of this.
Det räcker med att titta på Belgiens unilaterala beslut att återupprätta gränskontrollerna.

Mr Berenguer Fuster, we shall check all this.

Kära kollega! Vi skall kontrollera allt detta.