Wang Huning has been variously described as “China’s crown theorist” and as Xi Jinping’s “ ideological tsar ”. But he is more than just an influential thinker. As one of just seven members of the ...

UnitedHealth shares jumped 10 per cent in pre-market trading on Friday after Warren Buffett’s Berkshire Hathaway snapped up a stake in the troubled US healthcare group. The new investment, worth ...