The participants of the meeting of the working sub-group in Minsk on humanitarian issues agreed on the necessity of the exchange of prisoners in the format of " all for all ", said Wednesday the envoy of the self-proclaimed Donetsk national Republic in Minsk talks Denis Putilin. "It was supported within the subgroup of all participants ", - quoted Pushilin, the Donetsk news Agency. first, the coordinator of the working group on humanitarian issues of the contact group on Ukraine of the OSCE Tony Frisch also said that the parties to the talks in Minsk are not fundamentally object to the exchange of prisoners in the Donbass by the formula " all for all ".