Finland must apply to join the NATO military alliance "without delay", Finnish President Sauli Niinisto and Prime Minister Sanna Marin said on Thursday, signalling a major policy shift triggered by Russia's invasion of Ukraine.
Finland, which shares a 1,300 km (810 mile) border and a difficult past with Russia, has gradually stepped up its cooperation with the North Atlantic Treaty Organization as a partner since Russia annexed Crimea in 2014.
