Ukraine and the United States are in detailed talks on a deal involving U.S. investment in Kyiv's domestic drone production, Ukrainian Prime Minister Yulia Svyrydenko said on Friday.

Russian forces attacked Kharkiv with a drone on Friday, July 18. A strike was recorded near a residential area, according to the Telegram channels of Kharkiv Mayor Ihor Terekhov and Head of the Kharkiv Regional Military Administration Oleh Syniehubov.

Under a scheme first trialled last year and dubbed "Army of Drones: Bonus" (also known as "e-points"), units can earn points for each Russian soldier killed or piece of equipment destroyed.

If technology a year ago meant that “we could kill 50 Russians,” says Mr Derevyanko, “now it is five times more.”