In a special programme in the run up to Russia’s presidential election in March, HARDtalk looks back on interviews with those few Russians who have been ready to stand up to Vladimir Putin. From the late Boris Nemtsov to Alexei Navalny whose death was announced recently, what motivates those ready to risk everything to challenge Putin?

Stephen Sackur speaks to Bulgaria’s Prime Minister Nikolai Denkov. His country is trying to wean itself off Russian energy, and sends weapons to Ukraine, but many Bulgarians are still pro-Russian. As Europe tries to beef up its own security, is Bulgaria a weak link?

Russian authorities have announced the death of one of the country’s most significant opposition leaders Alexey Navalny in a remote penal colony in the Arctic Circle. Stephen Sackur spoke to him in Moscow in 2017 about the risks involved in being a prominent critic of President Putin.(Photo: Alexey Navalny. Still from his 2017 interview with Stephen Sackur)

Stephen Sackur is in New York for a special edition of the programme with Egyptian American satirist Bassem Youssef. During the Arab Spring, his mockery of Egypt’s leaders won him millions of fans, but after the military took over he fled to the US where he has reinvented his comedy career. Can laughter ever provoke political change?(Photo: Bassem Youssef, comedian and political satirist)

Stephen Sackur is in New York City for an exclusive interview with Ukraine’s top diplomat at the United Nations, Sergiy Kyslytsya. With partisan warfare in Washington DC blocking crucial military assistance to Kyiv, does Ukraine feel betrayed?(Photo: Still taken from the Hardtalk interview with Sergiy Kyslytsya)

Cornel West, high-profile philosopher, writer and activist, discusses his reasons for running for president and the potential impact on the election. They delve into America's inequality, wealth disparity, war crimes, and the changing dynamics of black voter support. The host challenges West about his ambitions as a third-party candidate, with Bernie Sanders disagreeing.

Stephen Sackur is in New York City, home of the United Nations, to speak to Vassily Nebenzia, Russia’s permanent representative to the UN. Ambassador Nebenzia is a key player in Vladimir Putin’s combative diplomatic strategy to accuse the West of seeking to impose its will on the world, from Ukraine to the Middle East. How effective is Moscow in the battle for world opinion?

Stephen Sackur speaks to José Ramos Horta, President of Timor-Leste. Are there lessons for the world to learn from his extraordinary life?

Former Prime Minister Abdalla Hamdok discusses the devastating consequences of the war in Sudan, international neglect and delays, efforts for peace, the dire situation in Khartoum, and the need for justice for the victims in Darfur.

South African justice minister Ronald Lamola discusses the historic victory of the preliminary ruling from the ICJ on the Gaza War, the deep suspicion between Israel and South Africa, the hypocrisy in international justice, and potential political motives behind South Africa's genocide case against Israel.