There has been lots of news about Azov, being an independent all volunteer untra-nationalist group (which keeps claiming they are not racist or antisemite), attracting neo-Nazi followers/volunteers from places like Belgium, and even Sweden. English would be a common "international" language for them to use. So this isn't really surprising.
Since when has the Azov battalion become an "independent" group? It is funded and sponsored by the 3rd richest man in Ukraine (the oligarch Igor Kolomoysky). Azov commanders take their orders directly from Kolomoysky, who is a close associate of Poroshenko. And yes.. they have neo-Nazis from all around the world, especially from countries such as Belgium and Sweden.