Far-right militias in Europe plan to confront Russian forces, a research group says.

The Russian attack on Ukraine has prompted a flurry of activity among far-right European militia leaders, who have taken to the internet to raise funds, recruit fighters and plan travel to the front lines to confront the country’s invaders, according to a research group.

In recent days, militia leaders in France, Finland and Ukraine have posted declarations urging their supporters to join in the fight to defend Ukraine against a Russian invasion. The posts have been located and translated by the SITE Intelligence Group, a private organization that specializes in tracking extremist groups.

Rita Katz, the director of SITE, said that numerous far-right white nationalist and neo-Nazi groups throughout Europe and North America had expressed an outpouring of support for Ukraine, including by seeking to join paramilitary units in battling Russia.