No guarantees: NATO members debate Ukraine’s future

Guest Anton LaGuardia, The Economist's diplomatic editor, shares insights on the mixed feelings within NATO regarding Ukraine's membership amid the conflict with Russia. He highlights the shifting stance of the U.S. and the varying support of member nations. Meanwhile, Gabriel Crossley, China correspondent, discusses the alarming impact of rising sea levels threatening cities like Guangzhou and Shanghai. He warns of the urgent need for urban planning as millions face risks by 2100, contemplating if a modern 'Great Wall' could shield them from these challenges.