Donald Trump's national security adviser has accused Russia of "a sophisticated campaign of subversion" to undermine free and open societies.
Gen HR McMaster told the BBC that Moscow used propaganda and disinformation against democracies.
He said Russia's alleged meddling in US elections was "certainly" a national security threat. He was speaking after President Trump's new national security policy labelled Russia and China "rival powers".
It was, on occasion, used by presidents to rehearse important speeches such as the State of...
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