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President Zelensky of Ukraine has sacked the head of the Ukrainian armed forces, General Valery Zaluzhny, saying a new approach to the defence of the country was needed. Also in the programme: The US supreme court has appeared sceptical of Colorado's decision to ban Donald Trump from its Republican presidential primary; and our international editor Jeremy Bowen heads to the northern Israeli border with Lebanon where soldiers have had some very close contact with Hezbollah fighters. (Photo: Gen. Valery Zaluzhny. Credit: Getty Images)

Russia's election commission has rejected anti-war challenger Boris Nadezhdin as a candidate in next month's presidential vote. Mr Nadezhdin has been relatively critical of Vladimir Putin's full-scale war in Ukraine when few dissenting voices have been tolerated in Russia.Also in the programme: In Pakistan, opposition parties have condemned the authorities for suspending mobile phone and internet services, as millions vote in general and provincial elections; and what an award-winning photograph of a polar bear tells us about climate change.(Photo: Boris Nadezhdin has vowed to challenge the election commission's rejection in Russia's Supreme Court. Credit: Maxim Shipenkov/EPA-EFE/REX/Shutterstock)

Benjamin Netanyahu says he will not settle for anything other than total victory over Hamas. At a separate news conference, US Secretary of State Antony Blinken said that while there were some clear non-starters in the Hamas response, the US did think it created a base for an agreement to be reached. We hear from a family member of a hostage still held in Gaza.Also on the programme: Ireland, traditionally a country which people emigrate from, is struggling to cope with the number of immigrants coming in; and we meet the Michelin starred chef who specialises in the food of West Africa.(Picture: Israel Prime Minister Benjamin Netanyahu Credit: Israeli Government)

The United Nation's humanitarian co-ordinator says at least 25 million people in Sudan are in urgent need of aid, as a result of the civil war. We hear from aid officials about how war is affecting the lives of ordinary people. Also in the programme: we have a report from Mexico about the devastating impact of the fentanyl crisis there, how former Fox TV host Tucker Carlson secured an interview with Vladimir Putin, and we also bring you the latest on Middle East diplomacy as Antony Blinken continues his trip to the region?(Photo: Sudanese refugees collect water from a borehole near Juba, South Sudan, 26 January, 2024. Credit: Samir Bol/Reuters)

Some 56,000 people died a year ago in southern Turkey and many of the millions displaced still have no home. We return to the affected areas.Also on the programme: a panel of judges has ruled that the former president, Donald Trump, is not immune from charges that he plotted to overturn the results of the 2020 election; and Hamas responds to the latest internationally-brokered proposal for a halt to the fighting in Gaza. (Picture: A commemoration event marking the anniversary of the earthquake in Southern Turkey. Credit:Bilan / EPA)

There've been protests in Turkey on the first anniversary of a devastating earthquake, with survivors complaining that reconstruction has been too slow. Newshour hears from Anna Foster in the southern province of Hatay.Also in the programme: Senegal slips into crisis; and deciphering the papyri of Herculaneum.(Picture: A woman mourns on a tomb at the Hatay earthquake cemetery. Credit: EPA-EFE)

He will step back from public duties while he receives treatment. It has not been revealed what type of cancer the British monarch has but, in a statement, the Palace said King Charles remained "wholly positive" about his treatment -- which began today. We are joined by his former media manager. Also in the programme: warnings that Ethiopia is on the verge of being engulfed by famine if actions are not taken soon; and we find out about President Nayib Bukele, who has just been re-elected in El Salvador, and who calls himself the coolest dictator in the world.(Picture: King Charles III Credit: Melville / Reuters)

An aid agency says that conditions in Rafah in the south of the Gaza Strip have reached a “new level of horror” as the US secretary of state, Antony Blinken, commences another crisis tour of the Middle East amid worsening violence in many parts of the region. Also in the programme: proposals for the Future Circular Collider; and is northern Ethiopia on the brink of famine?(Picture: A Palestinian boy holds a can with cooked food received from a charity kitchen amid shortages of food supplies in Rafah, in the southern Gaza Strip. Credit: Reuters)

The Chilean president, Gabriel Boric, has declared a state of emergency as fires claim lives and devour forests and homes across the centre of the country. We hear from a reporter from one of the worst-affected cities. Also in the programme: controversial elections in El Salvador; and memories of the early days of the Beatles as the estate of one of their first members, Stuart Sutcliffe, goes up for sale.(Photo: Forest fires in Chile's Vina del Mar region. Credit: ADRIANA THOMASA/EPA-EFE/REX/Shutterstock)

Within the space of twenty four hours the United States has mounted airstrikes against Iranian-linked groups in Iraq, Syria and Yemen. The strikes against the Houthi movement in Yemen are part of an ongoing campaign to deter them from attacking shipping in the Red Sea. We hear from our correspondent in Baghdad, who attended a memorial killed in strikes, and reaction from an advisor to the Iraqi government.International concern is growing about the decision of Senegal's president, Macky Sall, to indefinitely postpone elections that were due this month. Also in the programme: Why big fat cars could soon pay a heavy price for parking in Paris; and Kim's Convenience, a Netflix Canadian-Korean hit and theatre favourite in London.(Photo: RAF Typhoon FGR4 aircraft returning to the base following strikes against Houthi targets in Yemen. Credit: MOD/Crown Copyright/PA)