In case of any doubt about Norway’s commitment to maintain – and expand – its production of gas and oil offshore, the energy minister, Terje Aasland, has a pithy response: “We will develop, not dismantle, activity on our continental shelf.” This week, to the alarm of environmental campaigners, he announced that three gasfields off the country’s southern coast would reopen by the end of 2028 – nearly three decades after they closed – to meet a shortfall caused by the impact of the war in Ukraine and disruption to supplies from the Middle East. The decision will help keep gas...