(Reuters) -Russia's fourth-largest oil refinery, the Ryazan plant located south east of Moscow, halted a primary crude distillation unit on October 23 following a Ukrainian drone attack, two industry sources told Reuters on Friday.

Ukraine has stepped up its long-range drone strikes on Russian energy facilities over the past few months.

Russia’s Ryazan oil refinery—its fourth-largest and a key Rosneft asset southeast of Moscow—was forced to halt a major crude distillation unit after a Ukrainian drone attack set part of the facility a

A litany of drone incidents have hit NATO members in recent weeks, shutting down major airports and appearing around sensitive military sites. Russia’s true role in drone incursions away from the eastern flank is murky, although NATO officials have said Moscow may be probing the alliance. Moscow has typically denied involvement.

LONDON (AP) — Ukrainian President Volodymyr Zelenskyy was in London on Friday for talks with two dozen European leaders who have pledged military help to shield his country from future Russian aggression if a ceasefire stops the more than three-year war.

President Volodymyr Zelenskyy has demonstrated the Octopus, a Ukrainian interceptor drone, to UK Prime Minister Keir Starmer. Today, I discussed with the Prime Minister the development of defense cooperation and ways to increase pressure on Russia.