The European Central Bank continues to put pressure on banks in the eurozone, urging them to curtail business in Russia as soon as possible.

More than a year after Russia began invading Ukraine, several European banks, including Austria's Raiffeisen Bank International and Italy's UniCredit, are still doing business in Russia.

Andrea Enria, the European Central Bank's chief supervisor, acknowledged that the banks had stopped granting new loans in Russia, and that it was difficult to sell them because of pressure from Moscow because the deal must be approved by Putin personally. But he stressed the need for further action.