Kyiv's negotiating team has left for trilateral talks in Geneva with the US and Russia, as the Kremlin rejects accusations it poisoned Alexei Navalny - and North Korea glorifies its fallen troops in Ukraine.

The war in Ukraine showed the US Army just how effective small drones can be. They can be more than scouts. They can be offensive weapons.

Dispatches from Ukraine. Day 1,440.

A drone whirred through a shopping centre in the Russian city of Voronezh as Shaman, an operator for the Russian army, showed shoppers one of the devices that have dominated the battlefield in Ukraine.

Sr. Lt. Serhii Andrieiev told Business Insider that the cold can disrupt anything from the drone's camera lens, to its battery, to its aerodynamics.