Who could be behind hoax bomb threats to European air travel?

Recent hoax bomb threats targeting European airlines have raised suspicions of Russian involvement due to their coordinated nature and timing with other malicious activities. While some experts suggest these incidents may represent a form of hybrid warfare aimed at undermining Western infrastructure, no concrete evidence has yet linked these threats to Russia or its proxies. An email threat referencing a banned Russian ultra-right group adds to the complexity, but it remains unclear if it is a genuine lead. Authorities are urged to focus on tangible evidence rather than speculation as they investigate these incidents.