Brussels said it was imposing sanctions on nine people and four entities, while London said it was adding 24 names to its blacklist. Among those subjected to asset freezes and visa bans were officers of Russia's GRU military intelligence agency, and alleged "cybercriminals" working together with the Russian state.

The European Union has imposed sanctions on Russian military intelligence officers, hackers, and private companies.

The new sanctions are part of the EU's largest-ever package of measures, and the first time Romania has proposed specific restrictions against Russia.