Since the early summer, Ukrainian forces have destroyed a significant portion of Russia’s oil refining infrastructure, causing widespread gasoline shortages in the country. The strategy has provided Kyiv with a much-needed win, but allies should supply more long-range weapons to keep this momentum going.

The energy sector is arguably Russia’s achilles heel, as it provides roughly 30 per cent of federal revenues and effectively funds the Kremlin’s war machine. Yet, until recently, Ukraine was unable to inflict significant damage in this domain, owing to technical and political constraints.

On the technical side, Kyiv initially lacked the weapons needed to launch consistent, meaningful strikes deep inside Russian territory. Ukraine’s production of long-range missiles had been modest

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