"The only possible long-term solution is for the post-war order to be founded on the underlying principle that Ukraine becomes the buffer state that it once was. Russia retains the territory agreed upon at an international peace conference, and everything to the west of this line - all the way to NATO's eastern border - comprises the territory of Ukraine, which will once again become a buffer state," Orban told the Welt am Sonntag newspaper on Friday.
Russia and NATO must agree on the manpower and equipment of the Ukrainian armed forces that are allowed to operate in the buffer zone, and both would have to guarantee that "no one will subjugate this buffer state to their power," Orban added.
"This is a matter for discussion, and international law provides the tools to create such a system of guarantees," he said.