Russian and Russian-backed separatist forces in the Donetsk region of Ukraine have suffered heavy casualties, according to UK intelligence officials.
They estimate the Donetsk militia alone has lost 55% of its original force.
Russian forces are focused on conquering all of neighboring Luhansk, aiming to encircle the city of Lysychansk, say Ukrainian leaders.
Regional chief Serhiy Haidai said there had been “colossal destruction” in the city, adding that the situation in its sister city of Severodonetsk was “hell”, and quoted the mayor as saying some 7,000-8,000 civilians remained there. END