(ANSA-AP) - BUCHAREST, MARCH - Romania's prime minister says a number of European countries need to diversify energy sources to lessen dependence on Russian gas. Ahead of a meeting of Balkan leaders, Premier Viorica Dancila said a planned gas pipeline pumping Romanian gas from the Black Sea to Bulgaria, Hungary to Austria could provide "a new source ... of gas for a series of European states who are heavily reliant on a unique foreign supplier." Many European countries rely on Russia for their gas. Romania hosts a meeting of leaders from Bulgaria, Greece and Serbia Friday in a resort north of the Romanian capital as part of a regular initiative to foster cooperation. Ahead of that meeting, Greek Prime Minister Alexis Tsipras said the Balkans should become "a motor of European development," not "a warehouse." (ANSA-AP).