Ukraine alleged Monday that Russia mixed bodies of its own dead soldiers among the Ukrainian military dead that have been returned, and that more than a million Russians have been killed since conflict began.

Ukraine received another 1,245 bodies of its soldiers killed in the war with Russia on Monday in the final stage of the repatriation of remains agreed at talks in Istanbul, Ukrainian officials said.

Military leaders and analysts alike are questioning whether any level of battlefield attrition can alter Russia’s efforts to occupy still more of Ukraine. Former Commander-in-Chief of the Armed Forces of Ukraine Valerii Zaluzhnyi admitted in November,