Russian troops aren't being trained to fight at night, and it's giving Ukraine an edge: UK intel

• Russian troops are having a tough time fighting Ukrainian forces at night. 
• They aren't being trained to do so and it's giving Ukraine an edge in the dark, UK intel said. 
• Russian military training typically happens in the daytime "to impress" top brass, the intel said. 

Russian troops are having a hard time fighting Ukrainian forces at night in part because they aren't trained to do so, giving Kyiv an advantage over Moscow in the dark, according to British intelligence.