Several EU member states have raised doubts about a plan to stop oil imports from Russia, put forward by the Commission's president.
The Commission is proposing a complete ban by the end of the year, building on a previous embargo on Russian coal.
At least four countries, heavily dependent on Russian oil, have called for exemptions before they approve it.
Ursula von der Leyen, president of the European Commission, admitted it won't be an easy move, but it will be done in quote, "an orderly fashion".
Russia's largest bank - Sberbank - will also be removed from the international payments system Swift as part of the latest sanctions.
Brussels correspondent Rosie Birchard spoke to Susie Ferguson.
