UK MI6 spy chief warns of 'aggressive' Russia threat in first speech
Blaise Metreweli took over from Richard Moore in October, becoming the first female chief of MI6 - a role publicly known by the codename "C" - in its 116-year history
Blaise Metreweli took over from Richard Moore in October, becoming the first female chief of MI6 - a role publicly known by the codename "C" - in its 116-year history