Finland officially joins NATO, what will Russia do to counter?

Finland has officially become a member of NATO

The country became the 31st member state of the North Atlantic Alliance. Earlier, the country's Foreign Minister signed a document on the country's accession to the bloc. With Finland as part of NATO, Russia's land border with the Alliance has grown by more than 1,200 km(around 1340 km).

Sweden is the next candidate to join,after it solves the disputes with Turkey.