37If the institution concerned decides to refuse access to a document which it has been asked to disclose, it must, in principle, explain how disclosure of that document could specifically and actually undermine the interest protected by an exception provided for in Article 4 of Regulation No 1049/2001 upon which it is relying. Moreover, the risk of that undermining must be reasonably foreseeable and not purely hypothetical (see judgments of 17 October 2013, Council v Access Info Europe, C‑280/11 P, EU:C:2013:671, paragraph 31 and the case-law cited, and of 3 July 2014, Council v in ’t Veld, C‑350/12 P, EU:C:2014:2039, paragraph 52).