After slowing Russia’s rate of advance over the past several months, Ukraine may have tipped the scales in April and recaptured more of its land than it lost, according to an analysis of battlefield positions. The Institute for the Study of War, a Washington-based think tank, said it had observed evidence that Russian forces suffered a net loss of 116 square kilometres (45 square miles) during the month. Recommended Stories list of 4 items list 1 of 4 Russia kills 27 in ‘senseless’ strikes on Ukraine days before ceasefire list 2 of 4 Russian drone hits kindergarten in Ukraine list 3 of 4 Russia tells diplomats to leave Kyiv in case Moscow launches mass strikes list 4 of 4 Amid Ukraine’s daring assaults, Russia scales back Victory Day celebrations end of list That figure counted only territory firmly held by each side, not what it called “grey zones”, where both Russian and Ukrainian soldiers held positions.…