Ukrainian drones have struck a major oil refinery in Russia’s Volgograd region for the second time in nearly three months, according to Ukraine’s general staff.

The attack by Russian missiles and drones targeted the capital, Kyiv, and the large cities of Dnipro and Kharkiv, as well as several smaller municipalities.

Ukraine's State Emergency Service reported energy infrastructure was struck in Odesa Oblast amid the ballistic missile attack. In a statement on social media, it said all of Ukraine could face outages for between six and 18 hours a day.

An overnight drone attack by Ukraine temporarily disrupted power and heating supplies in the southwestern Russia city of Voronezh, a regional governor said on Sunday.

Ukrainian soldiers said the use of medium-range drones has become more common as key targets move farther back.

R ussian forces have spread rapidly through Pokrovsk, the city in Ukraine’s east where the warring sides have concentrated their manpower and tactical ingenuity during the past week, in what may be a final culmination of a 21-month battle.

On the night of November 6, Russians attacked Ukraine with 135 Shahed and Gerbera drones, as well as other types of unmanned aerial vehicles. Ukrainian air defense forces neutralized or suppressed 108 of them,