Dialogues that are conducted on the problems of the truce in Ukraine, in practice, ineffective, said the Ambassador of Ukraine in Germany Andriy Melnyk. "the dialogue that continuously conducted, in practice ineffectual ", √ the Ambassador said on air of the German tv channel. Berlin, RIA " Novosti ". As announced on Tuesday the head of the OSCE Ivica Dacic, at the talks in Minsk agreed on the withdrawal of tanks and weapons of caliber of 100 millimeters away from the contact line in Donbas. On Tuesday, Dacic met in Minsk of the trilateral contact group on settling the situation in Ukraine and coordinators of its subgroups. Began in Minsk meeting of the trilateral contact group on the situation in Eastern Ukraine. The first stage of negotiations on settling the situation in Eastern Ukraine, which started on Tuesday in the Belarusian capital, was the meeting of Directors working groups. Then meetings were initiated by the groups themselves. Remember, the previous meeting of the trilateral contact group and its subgroups was held in Minsk in early July. The participants were unable to reach concrete agreements, among them the withdrawal of weapons with a calibre of 100 millimetres and demilitarization of Shirokino. The head of the OSCE Ivica Dacic said that this time has arrived in Minsk to " push the political process ", and hopes to contribute to the achievement of " at least a little arrangements."