Ukraine prepares to defend Russia's push in Kharkiv region | BBC News

Ukrainian troops are preparing to defend the north-western city of Sumy in the Kharkiv region, as Russia continues its summer offensive. Russian forces have already penetrated the border area near Kharkiv, Ukraine’s second largest city in recent weeks. The US-based Institute for the Study of War think tank believes Putin's main aim is to create a buffer zone, as does Russian military analyst Anatoly Matviychuk. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news #BBCNews