As NATO marks 70 years, Jens Stoltenberg discusses main challenges facing alliance

генсек НАТО Йенс Столтенберг, фото: ЧТК/AP/Cliff Owen

The North Atlantic Treaty Organization was established on this day, April 4, 70 years ago. In connection with the anniversary, Czech Radio European analyst Filip Nerad spoke to NATO Secretary General Jens Stoltenberg in Brussels.