The European Union's executive body has proposed capping the price of Russian gas, within hours of Russia's leader condemning the idea as stupidity.
Energy prices have soared in the wake of Russia's invasion of Ukraine, forcing the EU's 27 states into action.
"We must cut Russia's revenues which Putin uses to finance this atrocious war," said European Commission chief Ursula von der Leyen.
But Mr Putin said Moscow would react to a cap by halting supplies completely.
"We will not supply gas, oil, coal, heating oil - we will not supply anything," he said, if it went against Russia's interests.
https://www.bbc.co.uk/news/world-europe-62817566