Ukraine is on the brink of losing the eastern region of Luhansk to Russia and is currently outgunned and running low on ammunition, a senior Ukrainian intelligence official has warned.

“The situation is very difficult because the Russians have a significant superiority in the weapons available to them,” says Vadym Skibitsky, the deputy head of Ukraine’s military intelligence.

Now in its fourth month, the war in Ukraine has become an artillery battle of attrition that Skibitsky says is grinding down both Russian and Ukrainian forces, but that Moscow still maintains an advantage in terms of its weapons stockpiles, while Kyiv is almost completely reliant on Western-supplied arms and munitions.

“According to our estimates, Russia still has the potential to wage a long-term war against Ukraine,” Skibitsky said in an interview with Current Time, the Russian-language channel run by RFE/RL in cooperation with VOA.