Voices to help you understand the war in Ukraine

Post columnist David Ignatius, a foreign affairs expert, spent time this month traveling in Europe with Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, and what his staff calls the “big green map” of Ukraine. “In this awful conflict, the intelligence data compiled in the map has been America’s most potent weapon,” Ignatius writes.

Ignatius also describes what he saw in the NATO capitals he visited with Milley, including streets decorated with Ukrainian flags: “In Warsaw, a grim ‘wanted’ poster branded Putin a war criminal. In Vilnius, Lithuania, a skyscraper was festooned with a banner summoning Putin for a trial in The Hague. With Russian shells pounding Ukrainian cities a few hundred miles away, Milley, at stop after stop, preached readiness combined with caution.”