KYIV, May 26 – The Ukrainian Petroleum refinery (Merefa mini-refinery) of AES Group, the investment and industrial group, was attacked by Russian invaders from the air on the night of May 26 and received critical damage, AES Group President Kostiantyn Valeulin.

"Tonight, the refinery became the target of the Shahed drone launched by the Russians. The targeted, calculated, accurate attack. The refinery received critical damage," he wrote on his Facebook on Friday.