Russian gas has ceased flowing to Europe via Ukraine, causing power cuts in parts of Moldova and concern in some EU capitals about making up the deficit. In others, however, there was celebration over a further step towards weaning Europe off Russian energy. Poland’s foreign minister, Radosław Sikorski, called the development “a new victory” for the continent. Russian gas has flowed through Ukraine for decades, mainly through a Soviet-built pipeline that begins in Sudzha, a town in Russia’s Kursk region currently under the control of Ukrainian forces, and ends near Uzhhorod, on Ukraine’s western border with Slovakia. Gas continued to