Ukraine's return of control over a city in territory annexed by Russian President Vladimir Putin shows that Ukrainians are making progress and are capable of pushing back Russian troops, NATO Secretary General Jens Stoltenberg said on Sunday.

"We saw that they were able to take a new city, Liman, and this shows that the Ukrainians are making progress and are able to push back the Russian troops thanks to courage, bravery, skill and, of course, thanks to modern weapons supplied by the US and other allies," he said. Stoltenberg speaking on NBC's "Meet the Press" program.

The best way to oppose the annexation of Ukrainian territories announced by Russia is to continue supporting the government in Kyiv, Stoltenberg said.

Commenting on Ukraine's application to join NATO in an accelerated manner, Stoltenberg repeated that "any decision on membership must be made by consensus of all 30 allies."

On October 2, it became known that about a third of NATO member countries (9 out of 30) responded positively to its application to join the North Atlantic Alliance under the accelerated procedure.