Google's Threat Analysis Group has pointed out in a blog post that Russian and Belarusian hackers are targeting Ukrainian and Polish military and governmental entities with phishing attempts. Hacking groups FancyBear and Ghostwriter are believed to be the major threat actors behind the attacks.
https://www.notebookcheck.net/Russian-and-Belarusian-hackers-launch-large-scale-phishing-attacks-against-Ukrainian-and-European-entities-reveals-Google.607064.0.html
Can anyone doubt that these hacker groups are at least partly state-sponsored?