The fall of Constantinople to the Ottomans in 1453 marked the end of a thousand years of the Christian Roman Empire. Thereafter, world civilisation began a process of radical change. The West came to identify itself as Europe; the Russians were set on the path of autocracy; the Ottomans were transformed into a world power while the Greeks were left exiles in their own land. The loss of Constantinople created a void. How that void was to be filled is the subject of this book.