Sine.Engineering is equipping Ukrainian drones with an alternative to GPS, which has become a critical vulnerability on battlefields.

KYIV (Reuters) -Overnight Russian drone attacks sparked a fire in Kyiv and injured a woman and damaged several houses in the northeastern city of Sumy, Ukrainian officials said on Monday. The Ukrainian military said on Monday that it had shot down 61 out of 83 drones with 22 more likely downed by electronic warfare.

Ukrainians conducted another successful attack on Russian fuel infrastructure. On Tuesday morning, drones attacked a refinery in Saratov. A series of explosions were also heard near an airbase close to the city of Engels.

Short-range drones have become the primary cause of civilian casualties in Ukraine, with Kherson residents being among the most affected, according to a United Nations monitoring mission report released on February 11.

Ukrainian forces have launched the second large-scale drone attack on Russia's Saratov region in the space of a month, targeting both an oil refinery and a key military airbase. In the early hours of Tuesday,