bbc
The commander of Ukrainian military drone forces, Robert Brovdi, has said that an operation targeting these three Baltic oil export facilities was carried out between 23 and 28 March.
Brovdi added the strikes were aimed at "demilitarising Russia's oil arteries, refining capacity and crude export infrastructure".
Ukraine's military has said the Kirishi refinery is among the three largest oil‑processing plants in Russia, including the production of "fuels that support the armed forces of the aggressor state".
Volodymyr Zelensky has said Ukraine's allies have urged him to scale back attacks on Russia's energy infrastructure amid the ongoing global fuel crisis - but that they would only end if Russia stopped targeting Ukraine's first.
The Ukrainian president told journalists in a WhatsApp voice message that, by launching attacks on Russia's energy system, Ukraine was only responding in kind.
It is unclear which countries he may have been referring to. China and India remain heavily dependent on Russian oil, and the EU on Russian gas.