![](https://guardian.ng/wp-content/uploads/2024/06/EF294F08-3B78-4502-82F3-0E533B6AE97A-720x480.jpeg)
Biden to speak with Ukraine leader after warning Russia not to invade
US President Joe Biden and his Ukrainian counterpart Volodymyr Zelensky are due to speak by phone on Sunday amid growing fears that a Russian military buildup near the border