Negotiations of Foreign Ministers of Ukraine, Russia, Germany and France in the "Normandy Four" format took place in Berlin. Ministers called on the conflict parties in Ukraine to withdraw the artillery with caliber bigger than 100 mm and tanks from the contact line. They insist on the creation of working groups on security, conducting the political process, granting the humanitarian assistance and reconstructing of the destroyed regions. The participants agreed on the strengthening of the OSCE mission. Negotiations about placement of peace-keeping units will continue. The question of the complete exchange of prisoners remained unresolved.