Israel has announced the discovery of a massive natural gas field off its northern coast, worth tens of billions of dollars. <br /> <br />The company behind the exploration of the "Leviathan 1" field says it is the world's biggest gas discovery in decades. <br /> <br />It could free Israel from relying on foreign energy sources and could also affect the politics of the region.<br /> <br />Anand Naidoo reports.<br /><br />[December 31, 2010]