In this episode of The Fourcast, our correspondents are on the ground with the very latest on the war between Israel and Hamas, as Israelis shelter from Hamas rocket fire and Gaza is pounded by the heaviest bombardment in its history.   Secunder Kermani has been to the Kfar Aza kibbutz, which was targeted by the militants on Saturday, we hear an eyewitness report from filmmaker Yousef Hammash in Gaza, Matt Frei interviews Hamas spokesman Osama Hamdan as he tries to justify the recent killings, and IDF Lieutenant Colonel Peter Lerner tells Matt, "the people of Gaza are not our enemy."    And a warning, this podcast contains distressing material.

As Israel declares a ‘complete siege’ of Gaza, and the death toll in Israel continues to rise, we bring you the latest from the region, with Matt Frei reporting from Jerusalem and Krishnan Guru-Murthy live in London.    In this special episode of The Fourcast, we hear from civilians trapped in besieged Gaza, speak to a man living in a “bad dream” as six members of his family are missing following Hamas's surprise attack, hear expert analysis from our Foreign Correspondent Lindsey Hilsum, and Krishnan Guru-Murthy speaks to Israel’s Ambassador to the UK, Tzipi Hotovely, who explains why Israel feels justified in their decision to cut the power to the Gaza Strip.

At the Nato summit this week, the star attraction was President Zelenskyy of Ukraine. But while he knew he was among friends - and allies were keen to emphasise their continuing support - he came with a clear demand: let Ukraine join the Nato alliance.  But even before his arrival, the mood music suggested that Ukraine was not going to be offered membership to Nato, nor was it going to be given a clear timetable on how and when it could join. With President Erodgan of Turkey also holding up Sweden’s membership, it seemed like Nato had some trouble ahead of the summit. But then things changed. On the eve of the summit, Erdogan said he was stopping his blocking of Sweden’s application, and during the summit, President Zelenskyy appeared to accept that even if membership was not forthcoming, the head of Nato was clear that it might come one day. But how might the war come to an end? And why can’t Ukraine join now, to deter Russia? In today’s episode, we put these questions to Emma Ashford, an expert on Russia and Europe at the foreign affairs think tank, The Stimson Centre. I spoke to her about Nato, the war, and how it might conclude.  

The story of the sinking of the Titan submersible dominated news headlines. Five people killed underwater. That same week, our international correspondent Paraic O’Brian was also reporting on people drowning at sea.  In a small port in Tunisia, 11 people died after their boat, full of asylum seekers and refugees, capsized on its way to Europe. One story, but it happens all the time.  It is an ongoing crisis in the Mediterranean, claiming lives every day, as the EU and other nations try to deter migration itself, wanting to avoid an influx in refugees. On today’s Fourcast, we talk to Foreign Correspondent Paraic O’Brien about his time in Tunisia on the frontline of this crisis, and what the reaction by politicians, as well as the lack of reaction from the public, tells us about how we view migration today. This episode includes distressing themes.    

This hasn’t been the greatest week for Russia President, Vladimir Putin in two decades of power in the Kremlin. A mutinous band of mercenaries, that he himself created, charged up towards Moscow, denouncing his war in Ukraine and seemingly meeting little resistance on the way. While he faced down Evgeny Prigozhin and the Wagner group, appearing to banish them to Belarus, it’s not all over for Putin. In this episode, Hubertus Jahn, professor of the history of Russia and the Caucasus at Cambridge University, explains how the “mafia boss” in the Kremlin has seen cracks forming in his enterprise - and explores what might be next for Russia and its leader.    

The Darién gap is a stretch of land between Colombia and Panama, an unavoidable section of the route from South America to Central America that thousands of migrants a week take, as they travel up to the Mexico / United States border.  It’s been called ‘hell on Earth’ because of its dense and dangerous jungle. There are no roads, just treacherous paths, rivers that can wash you away, vast swamps, steep mountains and deadly animals. And it’s lawless, with cartels and kidnappers taking advantage of the vulnerable migrants.  The fittest take days to cross, the feeble can table weeks and many do not make it at all.  And despite all of this, record numbers are still crossing. Our Latin America correspondent Guillermo Galdos travelled that most dangerous of human trails, and in today’s episode of The Fourcast, he speaks about his journey, the people he met along the way.  

In March this year, the owner of a hotel in the Leicestershire village of Kegworth signed an exclusive contract with the Home Office to use his hotel to house asylum seekers. But the local community has been starkly divided over the arrival of dozens of their new neighbours. While some are welcoming, the arrival has also drawn angry protests. In today's episode of The Fourcast, we speak to our Communities Editor, Darshna Soni, about how this town has become divided over immigration and whether the government’s mission to stop the boats is inflaming tensions - as Number 10 says it is trying to get a handle on net migration and its growing asylum backlog. This episode contains reference to suicide.  

This past week, the G7 - the group of the world’s richest democracies - gathered in Japan to discuss Ukraine, Russia, global affairs, and their increasing concerns about a rising power looking out at them from over the water: China. This was some of the sternest wording from the G7, and China dismissed it as a smear. But the West also doesn’t want to completely antagonise and cut off China, with the Australian Prime Minister saying lessons had to be learnt from history. So, are we entering a new Cold War, where conflict is avoided but tensions remain? Or are we not far off from a catastrophic war? On today’s episode, I speak to Graham Allison, a former member of Bill Clinton’s defence department and one of the preeminent national security voices in America. He speaks to me about his historical theory called Thucydides Trap, where throughout the past a rising power has often come to blows with an established one. Will China and America go the same way? Producer: Freya Pickford Sources: AP

For weeks now, the world has been waiting for Ukraine to launch their spring counter offensive against Russia. But how much longer will we wait? Or has it already begun? As the battle for Bakhmut rages on, Ukraine has made steady gains around that region - whilst Russian troops have retreated but stepped up strikes on the capital city, Kyiv, this month. President Zelenskyy has toured European capitals asking for more weapons, securing from Britain long-range attack drones and missiles. In today’s episode, I speak to our international editor Lindsey Hilsum about why the spring offensive might be slightly delayed, what Ukraine really wants from any advances, and the geopolitical factors at play that mean Ukraine has to strike soon or lose the momentum. Producer: Freya Pickford

Fentanyl is killing at least seventy thousand Americans a year. It’s a synthetic drug, it’s up to 50 times more powerful than heroin and 100 times stronger than morphine. It’s also the biggest cause of death for Americans aged between 18 and 45: more than gun crime, more than road accidents. But where is that supply of Fentanyl to America coming from? And why are people taking it, when it’s so dangerous? And are there any solutions to this deadliest of epidemics? In today’s episode we speak to our Latin America correspondent, Guillermo Galdos, about the rare access he gained inside the Sinaloa cartel in Mexico, where he witnessed the mass production of Fentanyl. We also hear from journalist Ben Westhoff, who has spent years investigating the world of synthetic drugs in America and he explains why this crisis will get worse - even reaching the UK, before it gets better. Producer: Freya Pickford