In 2007, A Comparative History of Greece and China from Antiquity to the Present was published. The book is notable in that it homes in on the relationship between the two civilisations throughout their entire history spanning three millennia. The study raises two concepts: 1) the Greek-Chinese civilisation in a global context and 2) its political expression during the last 2500 years, that is, ecumenical empire as a glorified organisational model.[53]