Kathimerini reports on The Euro Plus Monitor Spring 2016 Update and writes: “The leftist-led Greek government’s so-called “negotiations” with the country’s creditors in 2015 are estimated to have cost the Greek economy 25 percent of its gross domestic product, or 45 billion euros, the Lisbon Council think tank and investment bank Berenberg argue in their updated report titled “The Euro Plus Monitor Spring 2016.”