Russia has officially announced the launch of the Donbas offensive. Attacks have intensified along the eastern Ukrainian front, and Ukrainian troops are trying to resist. International reporters say there is a rapid increase in the intensity of Russian firing, including in the west of the country, in Lviv, near the border with Poland. A series of powerful explosions were reported along the eastern front line. Cities like Kharkov, Mykolaiv and Zaporzhzhia were also the target of Russian bombing. More than 7,000 alleged war crimes committed by Russian troops are being investigated, according to the Ukrainian prosecutor’s office.