As a Syrian American surgeon living in Chicago, Dr. Samer Attar felt compelled to be of service during the Syrian civil war, when doctors were being driven underground by Syria’s Russia-backed military. When Russian bombs began raining down in Ukraine this year, Dr. Attar once more raised his hand to cross the border and treat the war-wounded.  Guest: Dr. Samer Attar, associate professor of surgery at Northwestern University Feinberg School of Medicine. If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices