You can read here the article on the strategy of Greek Prime Minister Alexis Tsipras, which was written by Professor George Pagoulatos. The commentary was published on 19 July 2015 in the Sunday edition of Kathimerini and is available in Greek.
Professor G. Pagoulatos explains the strategy of Greek Prime Minister in the Sunday edition of Kathimerini

Experts
George Pagoulatos
Director General, Professor of European Politics and Economy at the Athens University of Economics and Business (AUEB)