Laurence Tubiana, one of the architects of the Paris climate accords about her expectations of November's summit in Glasgow. Also in the programme: the US Special Envoy to Haiti, Daniel Foote, resigns saying the Biden administration's approach was to Haitian migrants attempting to cross to Texas was inhumane, and that Haiti couldn't cope with an influx of people needing food and shelter; and in an attempt to standardise and limit waste, the European Commission has come up with a proposal to ensure that all mobile phones, tablets and headphones will use the same charger. (Picture: Logo for COP26, the 2021 United Nations Climate Change Conference. It is due to be held in Glasgow in November 2021, under the presidency of the UK)

A climate summit of world leaders in 40 days will be the "turning point for humanity", PM Boris Johnson has said in a speech to the United Nations. So what would a successful summit in November look like? Also today; We've been speaking to the newly-appointed head of Kabul University in Afghanistan, who has announced plans to appoint more pro-Islamic staff; and the Gilgamesh Dream Tablet - looted during the first Gulf War- is being handed back to Iraq by the US today. (Photo: British Prime Minister Boris Johnson addresses the 76th Session of the UN General Assembly in New York City. Credit: Reuters)

The US is to donate 500 million more doses of the Pfizer vaccine to developing nations, bringing the total US commitment on vaccine sharing to more than one billion jabs. Experts say some 11 billion doses are required to vaccinate at least 70% of the global population. Also in the programme: Ukraine's President has promised a strong response after one of his top aides survived an apparent assassination attempt and; Netflix buys up the entire works of British Children's author Roald Dahl. (Image: U.S. President Joe Biden hosts a virtual coronavirus disease Summit as part of the United Nations General Assembly in Washington. Credit: Reuters/Hockstein)

President Biden is to host a virtual summit aimed at increasing the availability of vaccinations all over the world. The African Union say that if developed nations don't act quickly, Africa will quickly become the Covid epicentre. Also in the programme: China pledges to stop building coal-fired power plants abroad; and Arctic sea ice is declining at an alarming pace, contributing to a rise in sea levels. ( Picture: President Joe Biden addresses the UN General Assembly) Credit: China News Service

President Biden stresses multilateralism in his first address to the UN General Assembly. So what can the world expect from Biden's pledge to work with other countries to tackle humanity's most pressing problems? We discuss his speech with American political scientist Ian Bremmer and former French ambassador Syvie Bermann. Also in the programme: we look at Pakistan's relationship with the Taliban and its role in Afghanistan, and ask whether the British government's public identification of a third Russian man involved in the notorious 2018 Salisbury poisonings will make any difference to Russian undercover operations. And a glimpse of ancient history, as the United States returns a looted stone tablet to Iraq. (Photo: US President Joe Biden addresses the 76th Session of the UN General Assembly in New York City. Credit: EPA/EDUARDO MUNOZ / POOL)