Russia has deployed more than 1,500 drones in the last two days, according to Ukraine’s president Volodymyr Zelenskyy

Ukraine's President Volodymyr Zelensky warns of "more waves" of Russian drone attacks on Wednesday.

Russia has deployed more than 1,500 drones in the last two days, according to Ukraine’s president Volodymyr Zelenskyy

Widespread nature of attacks prompts warnings that Moscow is trying to overwhelm air defence systems