Ukraine’s authorities claim that more than 15,000 Russian soldiers have been killed in the conflict, while a senior NATO official last week estimated that between 8,000 and 15,000 have been killed. 烏克蘭當局聲稱,超過15,000名俄羅斯士兵在衝突中喪生,而一名北約高階官員上週估計有8,000至15,000...