BERLIN, December 5. /TASS/. Parameters of a United Nations mission to Donbass cannot be agreed because of the gap in Russia’s and the West’s approaches, German Foreign Minister Sigmar Gabriel said on Tuesday.

"So far, we, our allies and Russia have a different vision of this mission," he said, adding that the agreement of the mission’s parameters would be a big progress towards "sustainable truce in eastern Ukraine and heavy weapons withdrawal."

"But the very fact that Russia is ready for that is a big progress as it used to reject such internationalization of the conflict," he noted.

"Our proposal to Russia is clear: after sustainable truce is reached, we, the Europeans, can help restore Donbass and take the first steps to lift the sanctions. It will be the ultimate settlement of the situation in Ukraine and full implementation of the Minsk agreement."

"Anyway, it will be a breakthrough and the beginning of a new policy of d·tente," he stressed.