However, the discovery of natural gas in the Leviathan gas field led to a thawing of relations between the two governments. The two countries demarcated their Exclusive Economic Zones in 2010. Israel's rising antagonism with Turkey further increased the level of cooperation between the two countries, as Israel compensated by improving its relations elsewhere. In February 2012, Netanyahu visited Cyprus, the first visit of an Israeli Prime Minister in history. The collaboration between Cyprus, Israel and Greece on natural gas extraction has been characterised by the media as the Energy Triangle.