Amid the ongoing peace talks to put an end to the conflict in Ukraine, four people were killed and 17 others injured -- including two children -- in a massive overnight strike by Russia on Kharkiv, the country's second largest city.
The United States took a firm stance and told Ukraine that it could use American-supplied weapons to hit any Russian forces attacking from across the border, and not just the region near Kharkiv, Politico reported, citing US officials.