Advisor to the President for national security, Susan rice and foreign Minister of Greece Nikos Kotzias urged the parties not to violate the Minsk agreement on ceasefire in Ukraine, said the White house. "They discussed several security issues in the European Union and the middle East, including Russia's actions in Ukraine. They agreed that full implementation of the three Minsk agreements necessary to resolve the fall in the East of Ukraine ", - told in the White house. The United States blame the Russian Federation of interfering in the Ukrainian crisis, Moscow is many times denied. The U.S. on Wednesday accused the Russian Federation in the supply of weapons to militias and common exercises with the militias in the East of Ukraine. The U.S. is also urging the EU to maintain a "United front" of sanctions against Russia. Greece takes much more restraint in this matter and supports the lifting of sanctions, although to date has not used their veto power in the EU on the issue. dialogues " channel four ", held on 12 February came amid a sharp escalation of the situation in the Donbass, provoked by the Ukrainian security forces, which increased the forces began to storm the position of the militia. Following the meeting, the leaders of Russia, Ukraine, France and Germany adopted a set of measures involving, for example, the ceasefire in the Donbas with fifteen February, the withdrawal of heavy weapons and the development of the security zone. Soon after informing truce in the Donbass resumed shooting, the parties blame each other in violation of the "silence" and report that conduct only return fire. Kiev is considering an appeal to the UN and the EU on the introduction of peacekeepers in Donbass.