Britain denounced France's seizure of a British boat in French waters and warned Paris against further retaliation on Thursday, in a rapidly deteriorating row over post-Brexit fishing rights.
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The Cornelis Gert Jan, a scallop dredger, was escorted to the northern port of Le Havre overnight after its crew failed to prove it was allowed to fish in French territorial waters, French Seas Minister Annick Girardin said. A second British vessel was given a verbal warning.
The action signaled France's determination not to back down in the row, a day after listing potential sanctions against Britain if there is no progress in talks.
"It's not war, but it is a fight," Girardin told RTL radio.