Nearly 500,000 Russian soldiers are estimated to have been killed in Moscow’s full-scale invasion of Ukraine since it began in 2022, a top British intelligence official has said, as the conflicts grinds to a near stalemate. The figure, announced in a speech on May 27 by the director of the UK’s Government Communications Headquarters (GCHQ) tracks with other estimates made in recent months by other Western governments, as well as independent medi…