West Berlin Stresemannstrasse 1988.

West Berlin Stresemannstrasse 1988.

Facts are the cobblestones from which we build roads of analysis, mosaic tiles that we fit together to compose pictures of past and present. There will be disagreement about where the road leads and what reality or truth is revealed by the mosaic picture. The facts themselves must be checked against all the available evidence. But some are round and hard–and the most powerful leaders in the world can trip over them.

Timothy Garton Ash