Russian occupiers suffer heavy losses in Pokrovsk axis of the frontline, which remains the main one in the context of their offensive, and the actions of the Defense Forces in the neighboring Ocheretyne axis between the cities of Dobropillia and Kostiantynivka in Donetsk region do not allow the enemy to concentrate the main efforts in Pokrovsk, Commander-in-Chief of the Armed Forces of Ukraine Oleksandr Syrsky said.