European Union foreign ministers are meeting today to discuss imposing an embargo on Russian oil but any such measure would be unlikely to kick in soon, a veteran policymaker said on Monday.

“[Banning Russian] oil could be possible, by the end of the year,” said Jean Asselborn, foreign minister of Luxembourg who will host the EU foreign ministers meeting.

Given Europe’s dependency on it, banning natural gas would be even more difficult than oil, Asselborn added.