From the article: A spokesperson of the Royal Dutch Airforce says they are surprised about the words of Lubbers[1]. 'We never disclose any information on this. As former prime minister, he knows that'. According to the spokesperson whether or not there are nuclear weapons is a state secret.

[1] Lubbers was prime minister from 1982-1994, confirmed that there are in fact nuclear bombs in Volkel, and said that he never thought that "those silly things" were still there.