What do Boris and Biden want?

<div>The Prime Minister is in America to meet Joe Biden and discuss COP26 and the new Aukus security pact. But what do the two leaders hope to achieve? Also, the Labour party conference is this weekend. can Keir Starmer get the left of his party to heel or will his leadership be brought even more into question? Katy Balls speaks to James Forsyth and Isabel Hardman.</div>