Poland strike 'most likely from Ukrainian air defence', says Nato chief

A missile strike that killed two people in Poland was 'most likely from a Ukrainian air defence' but Russia bears the "ultimate responsibility", Nato's chief has said.

Nato's secretary general Jens Stoltenberg said "accidents happen" in war but that the onus is still on Russia.

He added the strike "would not have happened if Russia hadn't waged a brutal war of aggression against Ukraine".

He emphasised the need for these type of mistakes not to "spiral out of control", adding that there are lines of communication between the US and Russia, and between Nato and Russia.