Russia shells 4 communities in Sumy.

Ukraine war latest: Russia reportedly suffers 'some of highest' casualty rates over past 6 weeks

Key developments on Nov.

27: * Russian casualty rates' some of highest' over last 6 weeks, UK Defense Ministry says * Ukrainian resistance blows up car with pro-Russian Chechen fighters near Melitopol; * Ukraine reportedly hits aircraft factory in Russia's Smolensk * SBU says Kherson regional c...