LONDON (Reuters) -Russia has sacked the commander of its Western military district, the news outlet RBC reported on Monday, the latest in a series of top officials to be fired after a series of defeats and humiliations in the war in Ukraine. RBC said Colonel-General Alexander Zhuravlyov would be replaced by Lieutenant-General Roman Berdnikov. There was no official confirmation of the change, which was also reported by other news sites. The western military district is one of five that make up Russia’s armed forces. The reported departure of Zhuravlyov follows dramatic Russian losses in northea…