Ukraine is stepping up attacks on Russian energy – and it’s working

A dramatic rise in Ukrainian attacks on Russian oil refineries has sent gasoline prices in Russia to record highs, despite the government banning petrol exports to cope with the crunch.

​ A dramatic rise in Ukrainian attacks on Russian oil refineries has sent gasoline prices in Russia to record highs, despite the government banning petrol exports to cope with the crunch. Read More Breaking News, Latest News and Videos | CNN