An intense, days-long campaign by Russia — including both ground assaults and airstrikes — has stepped up pressure on a border region in northeastern Ukraine that Kyiv cannot afford to ignore, given that it is home to the country's second-largest city of Kharkiv.
source https://www.cbc.ca/news/world/kharkiv-russia-attacks-wartime-uncertainties-1.7203058?cmp=rss