After a Year of War, Ukraine's Military is Facing a New Test of Its Resolve, Holding the Line Until Key Weapons Arrive

"We're going to find ourselves in a logistics race when it comes to who can stay resupplied with the basics like ammunition," Jim Townsend, the former deputy assistant secretary of defense for European and NATO Policy, told Insider.

If there's a breakdown in Ukraine ammunition resupply, that's going to be very costly, he said. The Russians have that same problem, and Ukraine is trying to attack Russia's logistics system to degrade its ammunition stockpiles.

"We're facing a very bloody summer. We're facing a summer of attack and defense by both sides. And we're facing a logistics war of who can keep up the ammunition to keep pelting the other side," Townsend said, adding that "if we don't keep up a constant pace of resupply, Ukraine will find itself in a bad place."

"But if we can keep up that resupply, they've got a chance to hold the Russians — if not start pushing it back again," he said.

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