Elon Musk’s proximity to the president is hurting Tesla. How badly? The carmaker’s sales are falling, but a backlash against Mr Musk only partially explains the drop. 

And Vladimir Putin has a fateful decision to make. He knows that a ceasefire does not favour Russia, not least because he has not yet got what he wanted in Ukraine. The question is how much Donald Trump is prepared to press him to stop the fighting.