Commenting on the possibility of exchanging Russian servicemen in custody in Ukraine, for Ukrainian citizens, Klimkin said, "Such negotiations are in progress, and we have repeatedly said that we will do our best to extract our political prisoners from Russia, from territories of the occupied Crimea, from Donbas," Klimkin said. "We need to win another ten victories of the kind in Russia, 20 in the occupied Crimea and 144 in Donbas," the minister said, referring to the number of prisoners held respectively in these territories.