The year 2022 marks 2,500 years since Athens, the birthplace of democracy, fought off the mighty Persian Empire. This is the story of the three epic battles--Marathon, Thermopylae and Salamis--that saved democracy, forever altering the history of Europe and the West. In 2022 it will be 2,500 years since the final defeat of the invasion of Greece by Xerxes, the Persian king. This astonishing clash between East and West still has resonances...