RBC-Ukraine’s report from the front lines shows how Ukrainian soldiers are defending the Sumy region from a potential Russian invasion and what is happening in the border area. More than two years have passed since Russian troops were driven out of Sumy region. Now this region is a likely next target of the Russian occupiers. Like in the neighboring Kharkiv region, they will try to create a so-called sanitary zone here, pushing Ukrainian forces deeper away from the border. Along which we are moving, the Sumy region’s border already looks a little different from many settlements in Donbas – it …