Impose sanctions on refineries that buy Russian crude oil to end war, says Bill Browder

Putin critic says plants in China, India and Turkey are funnelling up to $1bn a day to Kremlin

Bill Browder's fight against Vladimir Putin has seen him face threats, lawsuits, false accusations of murder and Interpol arrest warrants. A disinformation-laden film was even made about him.

But 16 years after the death of his friend and lawyer Sergei Magnitsky at the hands of Putin's regime, Browder is unrelenting in his fight for justice. It is an endeavour that, by his estimation, has cost Putin and his cronies billions of dollars already, via asset freezes and sanctions. Hence the considerable risk to his safety.