Using a special methodology, 305 sites were identified near the border of Russia or Ukraine that could potentially be used as firing positions. There were also 518 recorded fields damaged from shelling.According to the authors, the Russians used howitzers 2A65 "Msta-B". In addition to howitzers, rocket-propulsion systems, including Grad, were also used. MLRS traces were found in 88 positions.A team of investigators claims that the specified number of shelling is the lowest threshold. There is no exact data."The Russian Armed Forces launched artillery bombardment from the territory of the Russian Federation no later than the beginning of July 2014. The frequency and scale of these attacks only increased until the signing of the Minsk Agreements in September 2014 ... The shelling across the border preceded the Russian offensive operations south of Ilovaysk and east of Mariupol, the report said.The main purpose of the investigation is to document the full scale of Russian artillery shelling of Ukrainian forces in the summer of 2014. According to investigators, the recorded shelling can be considered acts of aggression and open military action of Russia against Ukraine.