(Reuters) -Chinese-made engines are being covertly shipped via front companies to a state-owned drone manufacturer in Russia, labelled as "industrial refrigeration units" to avoid detection in the wake of Western sanctions,

Russia and Ukraine again exchanged a series of major overnight drone strikes as the two sides maneuvered ahead of a possible resumption of ceasefire talks.

Ukraine’s top military commander Gen. Oleksandr Syrsky called on President Trump to provide long-range missiles capable of attacking deep into Russia to cripple Moscow’s war machine.

A Russian factory, described by its director as the world's biggest maker of strike drones, has been shown on the Russian army's TV channel with teenagers helping make kamikaze drones to attack Ukraine.

The covert shipments of engines have allowed Russian weapons-maker IEMZ Kupol to increase its production of an attack drone despite U.S. and EU sanctions.