By Tom Balmforth and Yuliia Dysa KYIV (Reuters) -Russian forces have captured four villages in Ukraine's northeastern Sumy region, the local governor said, the latest battlefield setback for Kyiv as it seeks to hold territory and avoid handing Moscow the advantage in any peace talks.

Ukraine is raising funds for Sky Sentinel automated turrets which combine heavy machine guns with precision pointing and smart software to counter drones at low cost.

Russia launched over 900 drones at Ukraine over the weekend and comes after U.S.-led efforts last week to reach a ceasefire between the two countries.