Russia had burned through nearly its entire strategic missile stockpile
As Russia's stockpile of precision missiles neared exhaustion after months of sustained strikes, Moscow turned to Iranian-made Shahed drones — cheaper, slower, but available in quantity — to keep pressure on Ukrainian cities. The shift, marked by the first drone attack on Kyiv in 25 days, reveals not a strategy of strength but one of adaptation under constraint. In this adjustment lies a deeper story: a war reshaping its own logic, drawing Iran quietly but unmistakably into the conflict's orbit.
- Russia has burned through nearly its entire strategic missile arsenal since September, leaving commanders scrambling for alternatives to sustain their air campaign.
- Iranian-made Shahed kamikaze drones — once denied by Tehran, now delivered openly — have become Moscow's stopgap, launched in waves against Kyiv and cities across Ukraine.
- Ukraine's air defenses are holding: 21 of 26 drones were shot down on April 20, and 8 of 12 the following day, with no reported damage in Kyiv — but the volume of incoming fire is rising.
- Russia is distributing strikes across multiple regions simultaneously — Odesa, Kharkiv, Zaporizhia, and beyond — testing the limits of Ukrainian interception capacity on every front.
- Iran's emergence as a reliable drone supplier signals a deepening military partnership that could sustain Russian operations long after its own precision weapons are gone.
By late April, Russia's long-range precision missile stockpile had been nearly exhausted — the product of months of sustained strikes and an 88 percent Ukrainian interception rate that had consumed 750 of the 850 missiles fired since the previous September. Faced with dwindling options, Moscow turned to Iranian-made Shahed drones: loitering munitions that hover, watch through a nose-mounted camera, and dive to detonate on command. On April 20 and 21, Russian forces launched these weapons in waves, striking Kyiv for the first time in 25 days.
The Institute for the Study of War described the shift plainly — Russia was using the Iranian drones to offset the degradation of its precision arsenal. The Shahed-136 and its smaller variant, the Shahed-131, cost far less than cruise missiles and require no vast stockpile to sustain. Iran, which had long denied any military role in Ukraine, was now openly supplying them. By February, observers had already noted Tehran's growing status as a global leader in drone production.
Ukraine's air defenses proved resilient: 21 of 26 drones were intercepted on April 20, and 8 of 12 the following day, with no damage reported in Kyiv. But the strikes spread far beyond the capital, reaching Odesa, Kharkiv, Zaporizhia, Poltava, and Chernihiv — a deliberate dispersal designed to test Ukrainian defenses across multiple fronts at once.
The deeper significance lay not in any single attack but in what the pattern revealed: a war shifting from precision to volume, from Russian-made sophistication to Iranian-supplied affordability. Whether Ukraine's defenses could absorb an indefinite flood of cheaper munitions — and whether the Tehran-Moscow supply line would hold — had become the conflict's new defining question.
By late April, Russia had run through nearly all of its long-range precision missiles. The stockpile that had sustained months of strikes across Ukraine was nearly empty. So the Russian military turned to a different tool: Iranian-made Shahed drones, loitering munitions that fly like aircraft but detonate like missiles, packed with explosives in their nose cone. On April 20 and 21, Russian forces launched these weapons at Ukraine in waves, marking the first time in 25 days that Kyiv itself had come under drone attack.
The Institute for the Study of War, analyzing the shift in Russian tactics, concluded that Moscow was using the Iranian drones to "offset the degradation" of its precision munition supply. This was not a choice born of preference but of necessity. Ukrainian Air Force Colonel Yuri Ihnat had stated plainly that Russia had consumed almost its entire strategic missile arsenal since the previous September. In that span, Ukrainian forces had shot down 750 of the 850 missiles Russia had fired at them—a 88 percent interception rate that had forced Moscow to adapt.
The adaptation came in the form of the Shahed-136 and its smaller cousin, the Shahed-131. These are not conventional drones in the sense of surveillance aircraft. They are weapons that hover over a target area, guided by an operator on the ground who watches through a camera mounted in the nose, waiting for the moment to dive and detonate. They cost far less than precision cruise missiles and require no massive stockpile to sustain. Iran, which had previously denied any military involvement in Ukraine, was now openly supplying them to Russia. By February, international observers had already noted that Iran was becoming a global leader in deadly drone production.
On April 20, Russia launched 26 of these drones at Ukrainian targets. Ukraine's air defense systems, which had proven remarkably effective throughout the war, shot down 21 of them. The next day, Russia sent 12 more drones. Ukraine's forces intercepted eight. The Kyiv City Military Administration reported no damage from either attack. But the strikes extended far beyond the capital. Between April 19 and 21, Russian forces targeted cities and regions across Ukraine: Odesa, Poltava, Vinnytsia, Dnipropetrovsk, Zaporizhia, Kharkiv, and Chernihiv. The pattern was clear—Russia was distributing its new supply across multiple fronts, testing Ukrainian defenses and compensating for the weapons it no longer had.
What made this shift significant was not just the change in hardware but what it revealed about the war's trajectory. Russia had moved from expensive, sophisticated strikes to cheaper, less precise systems. Ukrainian forces had adapted their air defense to counter the new threat. And Iran, despite years of diplomatic denials, had become an active participant in the conflict, supplying weapons that would sustain Russian operations as its own arsenals dwindled. The question now was whether Ukraine's defenses could maintain their effectiveness against a flood of lower-cost munitions, and whether Russia's supply line from Tehran could be sustained indefinitely.
Citas Notables
Russia is using Iranian drones to offset the degradation of its precision munition supply— Institute for the Study of War
Russia has used almost all of its strategic missile stockpile since September— Ukrainian Air Force Colonel Yuri Ihnat
La Conversación del Hearth Otra perspectiva de la historia
Why did Russia suddenly start using Iranian drones instead of its own missiles?
Because it ran out. Russia had burned through nearly its entire strategic missile stockpile by April. Ukraine was shooting down 88 percent of what Russia fired at it, so Moscow needed something cheaper and more abundant.
But these Shahed drones—are they actually effective weapons, or is Russia just using what it can get?
They're effective enough. They're not precision-guided like cruise missiles, but they're loitering munitions. An operator watches through a camera and steers them into a target. They're slower, cheaper, and Russia can get them from Iran in volume.
So Iran is openly helping Russia now?
Openly enough. Iran had denied involvement for months, but by spring 2023 it was clear they were supplying these drones directly. It's a significant escalation in their military relationship.
How well is Ukraine defending against them?
Very well, actually. On April 20, Ukraine shot down 21 of 26 drones. The next day, eight of 12. The air defenses are holding, but the question is whether they can sustain that rate if Russia keeps flooding the zone with cheaper weapons.
What does this mean for how the war evolves?
It suggests Russia is shifting from a strategy of precision strikes to attrition. If it can't win with expensive missiles, it tries to overwhelm defenses with volume. That changes the calculus for both sides.