Stefan Korshak is the senior defense correspondent for the English-language newspaper the Kyiv Post. In this podcast interview, he talks about the strengths and weaknesses of Ukraine’s air defense. He also suggests how to improve it in light of recent increased daily Russian bombardment. There is also discussion of recent Russian efforts to probe NATO defenses. Mr. Korshak briefly mentions his new book, “The Siege of Mariupol”, which he co-authored with Christopher Lawrence. It will be published in November by Waterstones.