Scheduled to testify at Thursday’s impeachment hearing before the US house intelligence committee is Fiona Hill, a coal miner’s daughter from northern England and now one of the US’s leading Kremlinologists, a field that has regained importance in the age of Vladimir Putin and Donald Trump.

Avowedly non-partisan, she served as a national intelligence officer in the GW Bush and Obama administrations before going to work for Trump as senior director for European and Russian affairs on Trump’s National Security Council.

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