Five years into the war with Russia, Ukraine faces persistent manpower problems. Andrew Chang explores the advantages and limitations of using unmanned ground vehicles (UGVs) on the front line, in Ukraine and beyond. Images provided by The Canadian Press, Reuters, Adobe Stock and Getty Images »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@