Stephen Sackur speaks to David Miliband, president of the International Rescue Committee and former British foreign secretary. Hour by hour Vladimir Putin intensifies the scale and violence of the Russian military assault on Ukraine. Civilian buildings hit by rocket fire, towns and cities encircled, and the capital Kyiv now facing a vast build-up of Russian firepower. Is the West doing enough in response to Putin’s invasion of Ukraine?

Stephen Sackur speaks to the renowned Hungarian conductor and composer Iván Fischer. Much of the world is transitioning from locking down to living with Covid-19. And that means cultural life is returning to cities like London. Performers can return to the stage, audiences can gather again. After the pandemic, how easy is it to find the magic in music-making?

(Photo: Iván Fischer)

Stephen Sackur speaks to Leonid Volkov, a prominent figure in Russia’s anti-Putin opposition. Russia’s military invasion of Ukraine represents a gamble by the Kremlin - projecting regional supremacy will come at a high price. Just how strong is the president’s grip on Russia?

Colombians will elect a new President this year, and amid a crowded field, one candidate has reason to view the coming campaign with mixed emotion. Ingrid Betancourt was running for president 20 years ago when she was captured by Farc guerrillas and held captive in the jungle for more than six years. Colombia’s guerrilla war is over, and now she’s running again, promising a war on corruption. She says she’ll finish what she started - is that possible?

Early last year American democracy came under attack from within. Supporters of defeated President Donald Trump stormed the US Capitol and provoked deadly violence. Stephen Sackur speaks to the Democrat Congressman Jamie Raskin, a key player in the subsequent impeachment of Trump and the Congressional investigation into the 6 January assault. All this, as Congressman Raskin has faced up to personal tragedy - what happens when the pillars of personal and political life come crashing down all at once.

Russia and Ukraine have powerful ties of geography, history and energy. And when it comes to the geopolitics of the current crisis energy is a key factor. Ukraine has long profited from being the middle-man for Russian gas exports into Europe. Moscow is in the business of changing that reality. Stephen Sackur speaks to Yuri Vitrenko, CEO of Naftogaz, Ukraine's biggest energy company. As Kiev and Moscow face off, where does the economic leverage lie?

Vladimir Putin knows how to probe for weakness in the West. With his troops building up on the Ukrainian border, Russia’s president is testing the unity of NATO. In particular, he is putting pressure on Europe’s eastern flank. How will nations once in the Soviet orbit respond? Stephen Sackur speaks to Kiril Petkov, Prime Minister of Bulgaria, which Moscow says must not host a NATO military presence. This is a big test for a new prime minister in the EU’s poorest country. Is Bulgaria ready to stand up to Russia?

Republican Congressman Michael McCaul accuses President Biden of failing to stand up to the challenge of Vladimir Putin in Ukraine. After four years of Donald Trump, are Republicans credible when they condemn Biden for foreign policy failure?

(Photo: Congressman Michael McCaul appears on Hardtalk via videolink)

Stephen Sackur talks to George Takei, forever famous as Lieutenant Sulu in Star Trek. Interned as a child in the United States for being of Japanese origin, he now campaigns for gay and immigrant rights. Do the values of Star Trek still resonate?

Stephen Sackur speaks to the longtime leader of France's far right, Marine Le Pen. She's hoping to win the French presidency for her party, National Rally, in elections this spring. But the far right is now divided, and rivals accuse her of going soft in the defence of French civilisation. Have her efforts to detoxify her party’s image backfired?