France has threatened to cut Britain's power in a dramatic escalation of the bitter row over Jersey fishing permits.
Europe minister Clement Beaune engaged in the extraordinary sabre-rattling as he accused the UK of failing to implement the Brexit deal.
Paris was infuriated when Jersey only granted licences to 12 small French boats out of 47 applications this summer - with warnings that vessels could mount a blockade.
Mr Beaune went further this morning, pointedly observing that the UK depends on energy exports across the Channel.
'Enough already, we have an agreement negotiated by France, by Michel Barnier, and it should be applied 100 percent. It isn't being,' he told Europe 1 radio.
France has threatened to cut