His words are quoted by the TV2 channel.
“We must understand that Russia can turn off gas to all of Europe in one day,” he said.
According to Mathiesen, cases of cuts in gas supplies "are a sign that the current crisis could turn into a catastrophe."
On June 1, Gazprom confirmed the cessation of gas supplies to the Danish company Ørsted due to non-payment in rubles.
Gazprom also completely stopped gas supplies to Shell Energy Europe Limited due to non-payment in rubles.
The same measure affected the Dutch company GasTerra.
Before that, Russia stopped gas supplies to Finland, and at the end of April, Gazprom announced a complete suspension of gas supplies to the Bulgarian Bulgargaz and the Polish PGNi.