The decision is expected to be announced on May 15, three days after a similar move by Finland, Social Democrats’ Secretary-General Tobias Baudin said.
Amid the ongoing Russian military offensive in Ukraine, both countries have seen a dramatic change in public opinion with the majority of the population now supporting joining the US-led bloc, according to polls.
This has prompted authorities in both countries to reconsider their longstanding non-alignment policy, and Moscow to warn it would trigger a rethink in northern Europe.
