EXCLUSIVE: 'We'll fight as long as we have to', Ukrainian fighter says from Mariupol

A Ukrainian Azov Regiment soldier holed up in a steel works in Mariupol said his forces would fight for as long as needed and urged world leaders to find a way to save civilians and the hundreds of troops trapped in Russia's "medieval" siege. Azov, a former right wing paramilitary unit, is now part of Ukraine's National Guard.