Stoltenberg: 'We shouldn't underestimate Russia'

STORY: "The aim is of course to ensure that we can continue and also strengthen our support to Ukraine because we have seen that Russia has suffered big losses in Ukraine due to the brave Ukrainian soldiers and the professionalism and dedication of the Ukrainian armed forces, but we should not underestimate Russia," he said.

Russia launched what it calls a "special military operation" in Ukraine on February 24 last year, citing threats to its own security and a need to protect Russian speakers. Ukraine and its allies accuse Moscow of an unprovoked war to seize territory.