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Fiona Hill was a teenager growing up in County Durham at the height of the Cold War.

The newspapers spread out on the kitchen table and the headlines blaring from the TV set all had the same anxious message.

Humanity is under threat from nuclear war.

The explosion of a one megaton bomb over Bristol would kill 100,000 people immediately.

Yet a few miles away beyond Bath, nearly 13,000 people could be living underground

100 feet below the village of Gastard.

In all that anxiety, Fiona's instinct was not to huddle in a nuclear bunker.

Instead, she was compelled to travel right to the heart of the storm, to Moscow to study.

So the backdrop of my decision to study Russian

was the war scare of basically 1983.

During the past decade and a half,

the Soviets have built up a massive arsenal

of new strategic nuclear weapons,

...