Explainer: Why Russia sends drones before missiles in night attacks on Ukraine. How this tactic works and what it reveals about modern warfare.
When Russian forces launch strikes deep into Ukrainian territory at night, they rarely do it all at once. Instead, a recognizable pattern has emerged across hundreds of documented attacks over the past two years: waves of drones arrive first, followed hours later by cruise missiles. This sequence is neither random nor accidental. It reflects deliberate tactical choices shaped by the strengths and weaknesses of different weapons, the nature of air defence systems, and the specific goals of the strike.
Understanding this pattern is essential for interpreting the daily rhythm of conflict reporting from Ukraine. It also illuminates how modern militaries integrate different weapons systems in an era when sophisticated air defences exist on both sides. This explainer breaks down why Russia uses this approach, what each phase achieves, and what the pattern tells us about the constraints under which both belligerents operate.
Russian unmanned aerial vehicles—primarily cheap, commercial-grade drones modified for military use, along with some purpose-built models—serve multiple purposes in the opening phase of a strike. These aircraft are expendable. They cost significantly less than cruise missiles and can be produced or procured in larger numbers. When they are shot down by air defences, the loss is painful but manageable; each drone lost does not represent strategic attrition in the way a missile loss does.
In the opening hours of darkness, drone swarms force Ukrainian air defence systems to engage and expend ammunition. Every air defence missile fired at a drone is a missile no longer available to shoot down a cruise missile later. Ukrainian air defence networks must activate radar, light up their positions, and make tactical decisions under time pressure. This degradation of the defence layer is a primary objective of the drone phase. Additionally, drones can loiter over areas, search for targets of opportunity, and provide real-time information to commanders. Some reach specific aim points and detonate their payloads; others are simply there to consume defensive resources.
The drone phase typically lasts one to three hours. Ukrainian forces respond with anti-aircraft guns, air defence missiles of various types, and electronic warfare. The intensity varies night to night. On some occasions, Ukrainian air defence proves overwhelming and intercepts most drones before they reach populated areas. On others, significant numbers get through. The variability reflects the tactical complexity: both sides are learning and adapting in real time.
After the drone phase peaks and begins to subside, Russian cruise missiles enter the picture. These are conventionally more sophisticated, much more expensive, and carry larger warheads. Launched from aircraft, ships, or ground platforms sometimes hundreds of kilometres away, they follow pre-programmed routes to their targets. The missiles arrive in smaller numbers than the drone waves—often dozens rather than hundreds—but each one represents a significant investment and a weapon designed to penetrate air defences through speed, altitude, electronic countermeasures, or other technical means.
The tactical advantage of launching missiles after the drone phase is timing and saturation of a different kind. Ukrainian air defences have already been heavily engaged. Crews are tired, some systems may be damaged or have expended significant ammunition stocks, and the defence network is already stressed. The missile wave encounters a degraded defensive posture. Some missiles are intercepted, but the proportion of successful strikes tends to be higher than if they arrived into a fresh, fully prepared air defence system.
Missiles typically target infrastructure with military or economic value: power generation facilities, rail junctions, fuel depots, communications nodes, and weapons storage. The cruise missiles' precision and warhead size make them suitable for such aims. Drones, by contrast, are usually less accurate and carry smaller payloads, making them less effective against hardened targets but perfectly adequate for generating alarm, forcing responses, and wearing down defences.
The drone-then-missile sequence is not a rigid formula. It persists because Russian commanders assess it works. Over two years, this approach has been refined through hundreds of attacks. Ukrainian defences have also evolved, but the basic dynamic remains: cheap, plentiful drones soften defences; expensive, capable missiles strike when conditions are most favorable.
Both sides gather intelligence from each night's events. Ukrainian air defence commanders track which drone types are being used, from which directions they approach, and how many are being sent. This intelligence helps predict when and where missiles might follow. Russian commanders, meanwhile, observe which air defence systems are active, where gaps exist, and how Ukrainian responses evolve. Each attack is also a probe. The resulting asymmetry—Ukraine must defend everything; Russia must only successfully strike some targets—creates persistent pressure.
Weather, moon phase, and Ukrainian radar capabilities all factor into the choice to strike on any given night. Clear nights often see more activity because drones are easier to navigate and observe. The sequence itself is flexible: sometimes missiles are fewer or arrive sooner. The pattern is strategic tendency, not dogma.
For Russia, the arithmetic is straightforward. Drones are cheap; cruise missiles are not. The Ukraine conflict has demonstrated that sustaining large-scale cruise missile production is difficult. Using drones to degrade air defences first extends the effectiveness of scarcer missile stocks. The strategy also spreads risk: if all strikes arrived as concentrated missile barrages, Ukrainian defences might defeat them entirely. Sequencing the waves improves penetration rates.
For Ukraine, the challenge is equally clear: resources are finite. Air defence ammunition is expensive, produced in limited quantities, and subject to international supply constraints. Every drone intercepted means fewer resources for missiles. Ukrainian air defence personnel face exhaustion; operating air defence systems night after night, month after month, is grueling. The two-wave attack pattern pushes these constraints to their limits. Ukraine must choose: expend resources heavily on drones and risk being unprepared for missiles, or preserve ammunition for missiles and accept drone strikes reaching their targets.
Both sides understand these constraints and operate within them. Neither has found a simple, resource-cheap solution to the problem of sustained air defence or sustained air strikes. This is why the pattern has remained consistent across hundreds of nights of combat.
For observers and analysts, the drone-then-missile sequence is revealing. The intensity of drone waves suggests Russian confidence in their supply chains and their assessment of how degraded Ukrainian defences are. Large numbers indicate Russia may expect Ukrainian air defence to be relatively fresh. Sudden drops in drone numbers might signal Russian confidence has shifted, or that supply constraints have tightened. Similarly, the presence or absence of missiles, and their timing relative to drone phases, offers clues about Russian intentions for that particular night and their assessment of risk.
Ukrainian official statements often distinguish between intercepted and unintercepted drones, and between missiles that reached targets and those stopped. These figures, while sometimes disputed, offer a rough measure of air defence effectiveness. Over time, trends in these numbers—whether interception rates are rising or falling—indicate whether Ukraine's air defence is strengthening, weakening, or remaining static relative to Russian strike capability.
No single night's results are definitive. Rather, the pattern across weeks and months reveals the underlying balance between Russian strike capability and Ukrainian air defence. Observers tracking these patterns gain insight into one of the war's most significant daily dramas.
When reports arrive of Russian overnight strikes, the anatomy of the attack—which weapons were used, in what sequence, and with what results—matters more than the headline figures. A strike in which 200 drones arrived followed by 50 missiles, with high interception rates on both waves, tells a different story than a strike with fewer drones and fewer missiles but lower interception rates. The sequence, timing, and composition of waves all contain information about air defence effectiveness and Russian tactical thinking.
Look for trends over time rather than single events. One unsuccessful missile penetration does not signal a collapse of air defence; neither does one very successful interception night signal Ukrainian victory. The pattern across weeks shows whether air defence is being systematically overwhelmed, holding steady, or improving. This longer view separates tactical noise from strategic signal and provides context for understanding how the conflict is evolving in one of its most consequential dimensions.