Russia’s use of Iranian-made “kamikaze” drones to attack Ukraine shows that its army is under-equipped and under-manned, according to Ret. Lt. Gen. Mark Hertling, former Commanding General of the United States Army in Europe.

On Monday, Russia deployed Iranian-made Shahed-136 drones to attack Kyiv, killing four people, including a pregnant woman and her partner, according to Ukrainian officials.

“Mr. Putin’s army is hollow right now,” Hertling told CNN’s Erin Burnett. equipment and more and more from the point of view of personnel. So much so that they have to go to other countries, Iran for the Shahed-136 drones and now the missiles to replace a system that has just worn out .

Iran has denied supplying weapons to Russia, but the evidence indicates otherwise.

According to Ukrainian President Volodymyr Zelensky, Russia has already ordered 2,400 of the Shahed-136 drones from Iran. The drones are capable of carrying precision-guided missiles and have a payload of around 50 kilograms (110 pounds).

“What is extremely important is that the majority of missiles, more than likely rockets, that Russia will get from Iran will not be guided, they will continue to be terrorist weapons like the ones that Mr. Putin has. already used against Ukrainian citizens,” said Hertling.