Greek PM, Russia's Putin discussed boosting cooperation

Greek Prime Minister Alexis Tsipras discussed boosting cooperation with Russia on a variety of fronts including energy and the economy during a phone call with Russian President Vladimir Putin, the Greek leader's office said on Thursday. "The Russian president and the prime minister emphasized the need for substantial improvement of the cooperation between Greece and Russia -  countries with deep and historic ties – especially in the sectors of economy, energy, tourism, culture and transport,