President Vladimir Putin has lowered Russia’s nuclear response threshold and warned the West that an attack by Ukraine with the backing of a nuclear-armed nation would be considered a joint attack. This comes ahead of Ukrainian leader Volodymyr Zelenskyy’s meeting with US President Joe Biden, where he’s expected to push for permission to use Western-supplied long-range weapons to strike deep inside Russia. Addressing world leaders at the UN General Assembly High-Level Week, Mr Zelenskyy warned about the threat of nuclear disaster in Europe. Mitch McCann reports from UN headquarters in New York.
