Ukraine has reportedly been forced to overhaul the way it defends its skies as stocks of Patriot interceptor missiles dwindle, prompting air defence crews to abandon automatic engagements and make split-second decisions over which threats to destroy. Military expert and former Security Service of Ukraine officer Ivan Stupak said the shortage is reshaping battlefield tactics as Russia continues to launch complex waves of missiles and drones. Automatic defences give way to manual decisions Speaking to RBC-Ukraine's YouTube channel, Stupak said Ukrainian Patriot systems are no longer operating in their standard automatic mode because of limited interceptor supplies. Instead of automatically firing two missiles at each target, operators now manually decide whether to engage and often launch a single interceptor. The aim is to conserve scarce missiles for the most dangerous threats while avoiding the costly mistake of using advanced weapons against relatively cheap drones. Race against ballistic missiles Stupak also explained why some Russian ballistic missiles have struck before air raid sirens were activated. Their extreme speed and ballistic flight path leave radar systems with only a narrow window to detect and track incoming threats. That compressed timeline can create gaps in the warning system, particularly when air defence resources are already under pressure. He stressed that no missile shield can guarantee complete protection under such conditions. Russia keeps up relentless pressure The warning comes as Russia continues to combine ballistic missiles, anti-radiation missiles and large-scale drone attacks in an effort to overwhelm Ukraine's air defences. During one recent overnight assault, Moscow launched more than 150 drones alongside missile strikes. Reports later indicated that none of the ballistic missiles were intercepted, although Russian Kh-31P anti-radiation missiles also failed to hit their intended targets. Balancing scarce resources Despite mounting pressure, Ukrainian forces continue to inflict losses on Russian aviation. Kyiv recently reported shooting down a Russian Su-35 fighter jet, one of Moscow's most capable combat aircraft, reducing the intensity of Russian guided bomb attacks in some frontline areas. But with Patriot interceptor stocks under strain, Ukraine faces increasingly difficult choices over how to protect its cities, critical infrastructure and military positions against a relentless air campaign. Ukraine's air defenses switch to manual mode due to Patriot missile shortage, expert
