 Our Middle East analyst, Seb Usher, thanks for joining us. In the United States, Democrats will hold an emergency meeting later today to discuss Joe Biden's position. It follows a poor performance in a TV debate with Donald Trump and increasing calls for him to pull out of the race before the presidential election in November. Mr Biden, who's 81, has vowed to fight on. But as our US correspondent Peter Bowes told us, he's not convincing everyone.