British Prime Minister David Cameron urged Russian President Vladimir Putin on Sunday to support the formation of an international contact group that could lead to direct talks between the governments of Russia and Ukraine.

Serbian Minister of Foreign Affairs Ivan Mrkić has arrived in Yerevan where he will confer with Armenian top officials over the next two days.

German Chancellor Angela Merkel and Turkish Prime Minister Tayyip Erdogan agreed in a telephone conversation on Saturday that the sovereignty, territorial integrity and political unity of Ukraine shall be protected at all costs.