The decrease in the supply of Russian gas to Europe from Wednesday announces a difficult cold season, warns an expert.

"The great hope for the next winter is that it will not be too harsh and that it will not last too long", illustrates Yvan Cliche, specialist in energy issues and member of the Center for International Studies and Research. from the University of Montreal (CERIUM), on the airwaves of QUB Radio, Monday.

Ordinarily, Europe tries to fill its reserves to 70% of their capacity before the arrival of winter. However, the continent seeks to fill them completely in order to avoid a crisis if Russia completely cuts off supplies.

"In 2009, Russia cut off the gas to Ukraine and it caused a dozen deaths in Europe," recalls Yvan Cliche.