Since last fall, more than 12,000 North Koreans have reportedly been deployed to fight with the Russian army in Ukraine. Recently, Ukraine accused the Kremlin of recruiting foreign fighters from African nations as it struggles to recruit troops among its own population. Special correspondent Simon Ostrovsky investigates the reliance on mercenaries in the world's deadliest conflicts. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy