The BBC has seen evidence of the speed at which Russian forces fled the Ukrainian city of Lyman, with soldiers bodies lying in the street and an entire convoy of burned out vehicles. Also in the programme: Elon Musk once again offers to buy Twitter; and Antarctica's new postmistress. (Photo: A paper box with the symbol Z, used as a symbol of Russian forces, lays on the ground in the recently recaptured city of Lyman, Ukraine, 04 October 2022. Credit: Yevgen Honcharenko/EPA-EFE/Rex/Shutterstock)

Ukrainian armed forces have made territorial gains in regions illegally annexed by Russia, in the south and the east of the country. Also in the programme: North Korea has fired a suspected missile over Japan and we hear from one of the winners of this year's Nobel Prize for Physics. (Picture: Ukrainian armoured units are advancing against the Russians in several areas. Credit: AFP)

Brazil's Jair Bolsonaro and his leftist rival Luiz Inacio Lula da Silva on Monday buckled up for four more weeks of intense campaigning, as the president's unexpectedly strong showing sets up a tight runoff vote on October 30th. Also in the programme: protests in Iran continue; and is France doing all it can to support Ukraine? (Picture: A man walks past presidential campaign materials depicting Brazil's former President Luiz Inacio Lula da Silva and and President Jair Bolsonaro in Brasilia. Credit: REUTERS/Adriano Machado/File Photo)

Brazil’s far-right president Jair Bolsonaro will face former leader Luiz Inácio Lula da Silva in a run-off vote. With almost all the votes counted, Lula had won 48% against Bolsonaro's 43% , a much closer result than opinion polls had suggested. Former finance minister under Lula, Guido Mantego reacts to the result. Also on the programme, we hear from Iran where protests are into their second week following the death of Mahsa Amini and we speak to Swedish geneticist Svanta Paabo shortly after he was announced as the new Nobel laureate in Medicine. Picture: Brazilian newspapers are seen on a newsstand showing headlines about the election results of the first round of Brazil presidential election in Rio de Janeiro. Photo by Mauro Pimentel via Getty Images

The leader of Friday's coup in the West African nation of Burkina Faso, Captain Ibrahim Traore, joined a parade after the former military leader, Lt. Colonel Paul Henri Damiba, agreed to step down. We hear the latest from the capital Ougadougou and look at the background to the recent political upheaval with expert Andrew Lebovich of the Clingendeal Institute in the Netherlands. Also in the programme: a former Iranian political prisoner runs the London marathon; and the UK prime minister, Liz Truss, attends the Conservative Party conference after a turbulent first few weeks in office. (Photo: A man and a solider shake hands during a rally in support of the coup in Ouagadougou, Burkina Faso. Credit: EPA-EFE/REX/Shutterstock)