Germany has called for a phased-in ban on Russian oil imports into the EU, stepping up pressure on Brussels to find a deal between divided member states ahead of a crunch week for the bloc’s policy on Russian energy.

Jörg Kukies, one of chancellor Olaf Scholz’s closest advisers, said Berlin was in favour of an oil embargo, but needed a “few months” to prepare for an end to Russian crude shipments. Germany had previously said it would need until the end of the year.

With the EU this week discussing its toughest sanctions yet on Moscow, Berlin’s willingness to speed up its timetable increases the likelihood of a full oil embargo.

Germany, the EU’s biggest economy and most powerful member, was initially reluctant to target Russian oil at the outset of Vladimir Putin’s invasion of

Ukraine. But it has steadily shifted its position as the war has continued, in a sign of the EU’s determination to stop paying Moscow for energy in spite of the potential economic impact.

“We’re asking for a considered wind-down period,” Kukies told the Financial Times. “We want to stop buying Russian oil, but we need a bit of time to make sure we can get other sources of oil into our country.” Most German refineries have already switched to other suppliers.

Tensions between Russia and the west over energy have escalated in recent days after Moscow cut off the supply of gas to Poland and Bulgaria. The

European Commission is drawing up a sixth package of sanctions against Russia over its war against Ukraine, now in its third month. The measures are expected to target Russian oil, Russian and Belarusian banks and more individuals and companies.

Commission officials met member state ambassadors one-on-one this weekend in an effort to find a rough consensus on the terms and details of any move to curb the influx of Russian oil, which makes up more than a quarter of the bloc’s total