For Ukraine, May is turning out to be the cruellest month.
The town of Vovchansk in the northern Kharkiv region, liberated from Russian occupation more than 18 months ago, awoke Friday to intense shelling and aerial bombardment. Russia has found another way of stretching Ukraine’s already thin blue line.
President Volodymyr Zelensky and other Ukrainian officials said that Russian efforts to advance towards the town had been thwarted, but the Russians have since tried to cut road links with Vovchansk.
The Russians launched battalion-strength attacks along a 60-kilometer stretch of the border on Friday, claiming to occupy several villages in…