Defog of war: your questions answered

We tackle some of the many questions on the war in Ukraine that listeners sent in this week—why no-fly zones are a perilous idea, how weapons are making their way into Ukraine, why mud is a growing tactical concern, the implications of oil-and-gas embargoes and much more. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer