Seven hundred kilometres. That is how far Ukrainian forces reached on Sunday when their drones struck an oil refinery in the Yaroslavl region — a distance that would place the attack well beyond any definition of a borderland skirmish and deep into Russia's industrial heartland. On the same day, a second refinery, the Slavyansk facility in the southern Krasnodar region, was also hit, killing at least one person according to the regional governor. President Volodymyr Zelenskyy confirmed both strikes in a post on X, timed to coincide with Ukraine's Constitution Day — a choice of date that was almost certainly deliberate.

The strikes landed while Vladimir Putin was addressing a congress of his United Russia party in Moscow. His language was carefully calibrated: he acknowledged "problems" and described the attacks as "terrorist strikes on infrastructure," yet insisted they had absolutely no bearing on battlefield conditions along the eastern front. That claim sits uneasily with his simultaneous demand that Russia sharply accelerate the production of its most urgently needed air-defence systems — an admission that the country's existing shield has proved insufficient. Putin also rejected a Ukrainian proposal to suspend mutual long-range strikes as a confidence-building step toward peace talks.

His reasoning was candid: Russia's own deep strikes into Ukrainian territory are, in his words, "more destructive," and halting them would therefore favour Kyiv.