Defiant: Wintershall Dea chief executive Mario Mehren says the company is providing an adequate and reliable energy supply Photo: WINTERSHALL DEA

Wintershall Dea says environmental group has no right to order cease-and-desist

Activist group Deutsche Umwelthilfe demanded the German producer stop developing new oil and gas fields by 2026

20 September 2021 17:10 GMT Updated  22 September 2021 11:54 GMT
 in    Houston