Britain and France are leading EU efforts to impose more sanctions on Syrians close to President Bashar Assad in response to the devastating bombing of Aleppo, diplomats said, signaling that Russians may eventually be added to the list.

German government sources say Berlin is open to broadening the EU's existing list of Syrians banned from traveling to Europe or accessing money in the bloc's banks. The majority of the EU's 28 governments are moving closer to supporting more sanctions, three diplomats said.

That could enable European Union foreign ministers to sign off on the measures on Monday at a meeting in Luxembourg.