European leaders added 12 people to a list of those subject to travel bans and asset freezes for their part in Russia's seizure of Crimea on Thursday and begin preparations for economic sanctions if Russia expands its footprint in Ukraine.
French President Francois Hollande declined to give details of the names added to the list, which was agreed among the EU's 28 leaders after six hours of talks, but said it included Russians and Crimeans and raised the total number of people subject to EU sanctions to 33.
(Read more: What sanctions? How Russians spend rubles in the US)
German Chancellor Angela Merkel said preparations would also be made for possible trade and economic measures against Russia if it moves beyond Crimea into southern and eastern Ukraine, and confirmed that the EU was calling off an EU-Russia summit scheduled for June, severing political ties.
"We are ready to start stage three if there is further escalation with a view to Ukraine, those are economic sanctions and we asked the European Commission today to do preparatory work for possible economic sanctions," she said.