on the winter olympics and much more on the bbc sport website. that's bbc.co.uk/sport. that's all from me. as we've been hearing, borisjohnson has been rocked by a wave of downing street resignations in another blow to his leadership. yesterday, four of his most senior advisers quit, with another adviser, elena narozanski, leaving her role this morning. the pm is battling to save his premiership as conservative mps consider whether to oust him over lockdown parties in downing street. the health secretary sajid javid was asked if the prime minister's position was now untenable. the prime minister has been really clear in his response to the reports, the update from sue gray. he came to parliament as he said he would, he apologised, and he set out