US Secretary of State John Kerry says he will not hold any talks with Vladimir Putin until Moscow is ready to consider the US proposals for tackling the crisis in Ukraine.

The United Nations Security Council has failed to reach a consensus on the Ukraine crisis despite having met for the fifth time in 10 days on Monday.

Turkey urges canceling the referendum in Crimea, Turkish Foreign Minister Ahmet Davutoglu said on March 11. Ankara is doing everything possible to find ways to politically settle the situation in Crimea, he said.