German Chancellor Angela Merkel told Russian President Vladimir Putin referendum planned for March 16 on Crimea joining Russia violated Ukraine's constitution and was against international law.
The Chancellor also said she regretted that there had not been any progress on forming an "international contact group" which could find a political solution to the crisis in Ukraine.
Barack Obama warned Russia that the West will be forced to apply a cost to Moscow if it fails to change course in its dispute with Ukraine.
The ballot paper that the people of Crimea will use in Sunday's referendum was published today
Vitali Klitschko's visit to the eastern city of Donetsk is clearly an attempt to try to ease the divisions with Ukraine.