Chinese service editor Howard Zhang speaks to world affairs editor John Simpson about Xi Jinping's growing ambition and what it means for China - and the rest of us. We also speak to Olga Ivshina, BBC News Russian correspondent, to find out how many Russian soldiers have really died so far in the war - a figure that's a lot higher than the Kremlin will admit - and we find out why the Saudis are so keen to get their hands on major sports tournaments with sports editor Dan Roan. Plus, the seas around the UK and Ireland are hotter than ever before. We ask environment correspondent Matt McGrath how worried we should be.

Produced by Pandita Lorenz and Benedick Watt