Russia is gaining territory in Ukraine at one of the fastest rates since the war began, new data show, ahead of an emergency Downing Street summit. The Kremlin’s army seized 200 square miles of territory in November, up from 100 square miles the previous month, according to DeepState, a trusted Ukraine-based battlefield map. The speed of advance was approaching the fastest since the initial invasion almost four years ago, the Institute for the Study of War, a US think tank, said