SITREP: Russian mechanized forces have advanced an estimated 2-3 kilometers toward Kostiantynivka in Donetsk Oblast as of the latest reporting cycle, with confirmed engagement activity concentrated along the T0513 corridor between Pokrovsk and Chasiv Yar. Artillery exchanges intensified on 15-18 November across a 40-kilometer front, with Ukrainian defensive positions reportedly holding at Druzhkivka and Myrnohrad. Attrition rates for Russian armor assets have increased marginally, though momentum indicators suggest sustained pressure rather than breakthrough capability at present operational tempo.