Ukrainian forces defend against the Russian advance in multiple regions.

Ukraine's General Staff said on Wednesday its forces had repelled six Russian attacks in the past 24 hours in the eastern Donbas region, while Russian artillery had relentlessly shelled the right bank of the Dnipro River and Kherson city further south.

READ MORE

NATO foreign ministers discuss more winter aid for Kyiv

US to help Ukraine restore electricity

Ukrainians on Tuesday fled for bomb shelters after air-raid warning sirens, although the all-clear later sounded across the country. In the eastern Donetsk region Russian forces pounded Ukrainian targets with artillery, mortar and tank fire.

Zelensky said the Russian military was also attacking in Luhansk in the east and Kharkiv in the northeast, the latter an area Ukraine recaptured in September.

Ukrainian tanks in an unknown location of Ukraine. File/AFP

"The situation at the front is difficult," Zelensky said in his nightly video address. "Despite extremely large losses, the occupiers are still trying to advance" in Donetsk, Luhansk and Kharkiv. And "they are planning something in the south," he said.

Ukraine regained control of Kherson in the south this month after Russian forces retreated. Reuters could not independently verify the battlefield reports.

Foreign ministers from the NATO alliance, including US Secretary of State Antony Blinken, began a two-day meeting in Bucharest on Tuesday, seeking ways both to keep Ukrainians safe and warm and to sustain Kyiv's military through a coming winter campaign.

"We need air defence, IRIS, Hawks, Patriots, and we need transformers (for our energy needs)," Ukrainian Foreign Minister Dmytro Kuleba told reporters on the sidelines of the NATO meeting, enumerating various Western air defence systems.

Foreign ministers from the NATO alliance began a two-day meeting in Bucharest on Tuesday.

"In a nutshell: Patriots and transformers are what Ukraine needs the most."

Former Russian president Dmitry Medvedev warned NATO against providing Ukraine with Patriot missile defence systems and denounced the Atlantic alliance as a "criminal entity" for delivering arms to what he called "Ukrainian fanatics."

NATO Secretary-General Jens Stoltenberg said Russian President Vladimir Putin was "trying to use winter as a weapon of war" as Moscow's forces lose ground on the battlefield.

US and European officials said ministers would focus in their talks on non-lethal aid such as fuel, medical supplies and winter equipment, as well as on military assistance. Washington said it would provide $53 million to buy power grid equipment.

Reuters