Joe Biden’s delay in sanctioning the use of western weapons against targets in Russia has left the Kremlin’s forces laughing at Ukraine and able to “hunt” its people, Volodymyr Zelenskiy has told the Guardian. In a wide-ranging interview in Kyiv, the Ukrainian president said that the White House’s equivocation had cost lives and he urged the US president to overcome his perennial worries about possible nuclear “escalation” with Moscow. On Thursday night it emerged that, after months of lobbying, the US had taken a small but symbolic step – and for the first time would permit some American-made weapons to...