 This is the BBC World Service in London. You're listening to NewsHour. I'm James Menendez. I'm not going anywhere. The words of President Biden when he called into an American cable news show on Monday to underline that he had no intention of ending his bid for re-election this November. Questions about Mr Biden's health and mental acuity were given added urgency when he performed poorly in the first presidential debate with Donald Trump at the end of June. Since then, there have been calls for him to step aside. Some prominent donors and some within the party,