Swedish Prime Minister Magdalena Andersson rejected calls by the opposition to consider joining NATO over the Ukraine crisis, saying the application would destabilize security in Europe, Reuters reported.

Sweden has not been involved in war since 1814 and has built its foreign policy on non-participation in military alliances, but in recent years it has developed increasingly close ties with NATO as tensions grow with Russia in the Baltic region.

"If Sweden were to choose to send in an application to join NATO in the current situation, it would further destabilize this area of Europe and increase tensions," Andersson told reporters.

"I have been clear during this whole time in saying that what is best for Sweden's security and for the security of this region of Europe is that the government has a long-term, consistent and predictable policy and that is my continued belief," she added.