Ukraine’s conventional forces lack the weapons and ammunition needed to launch a full-scale ground offensive to retake territory from the Russians, Oleksii Reznikov said in an interview. He said he expects that sufficient quantities will eventually be delivered in line with commitments already made by Ukraine’s Western partners.

In the meantime, Ukraine is seeking to erode Russia’s military capabilities by attacking its most sensitive military installations from within.

“We’re using a strategy to ruin their stocks, to ruin their depots, to ruin their headquarters, commander quarters,” he said. “It’s our answer to their meat-grinder tactics.”

To that end, Ukraine is activating a “resistance force” under the command of Ukrainian special forces to carry out attacks far behind Russian lines, Reznikov said. The force was formed in January in accordance with a law passed last year, and in recent weeks has been activated in Ukrainian territory held by the Russians.