The gains in Ukraine: stalled Russia plainly wanes

Ukraine’s army has pushed Russian forces back in the south and east. We ask how they’ve managed to make such impressive gains so quickly, whether more could follow and what Russia’s reaction might be. Why Britain has such troubles building homes, power stations and really much of anything. And how Maine’s lobstermen are responding to the latest threat to their industry.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer