Ukraine's defence ministry claims its long-range strikes have disabled 51 percent of Russia's oil refining capacity.

The October 4 statement marks Kyiv's most aggressive assessment yet of its campaign against Russian fuel infrastructure. Ukrainian drones have repeatedly hit refineries deep inside Russia this year.

President Vladimir Putin appeared to acknowledge the pressure. On October 1 he admitted the strikes were costing Russia about one percent of gross domestic product.

Independent analysts caution that exact figures are hard to verify. Russia has not published detailed damage assessments, and some struck refineries resume partial operation quickly.

The campaign has coincided with fuel price rises inside Russia. Regional authorities have reported shortages of petrol and diesel in several areas.

Ukraine says the refinery strikes are legitimate military targets that fund Russia's war effort. Moscow calls them terrorist attacks on civilian infrastructure.

Commercial satellite imagery reviewed by independent analysts shows visible damage at several large refineries. Russia's energy ministry has not commented on Ukraine's 51 percent claim.

Sources: particle.news, pinkun.com, europesays.com.