Russia’s army admitted Sunday that there were “killed and injured” soldiers among its troops in Ukraine on the fourth day of its invasion, without saying how many had died there. “Russian servicemen are showing courage and heroism while fulfilling combat tasks in the special military operation,” Moscow’s army spokesman Igor Konashenkov said on state television. “Unfortunately, there are killed and injured among our comrades.” This was the first time Moscow had spoken about losing men in Ukraine since President Vladimir Putin launched the invasion in the early hours of Thursday. Konashenkov sai…