Volodymyr Zelensky wrote Ukraine relies ‘almost exclusively’ on the US for ballistic missile defences Zelensky writes urgent letter to Trump over critical air defence shortage On The Ground newsletter: Get a weekly dispatch from our international correspondents Get a weekly dispatch from our international correspondents Get a weekly international news dispatch Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Volodymyr