Economics and Policy Lebanon’s budget deficit decreased to LL27 billion ($18 million) in January 2013 or 1.71 percent of expenditures compared to LL265 billion ($176 million) or 14.94 percent of expenditures during the same month last year. More from The Daily Star British geological surveyor Spectrum has started a new phase of its 3-D survey of offshore oil and gas reserves off Lebanon, covering parts of four blocks involved in the first licensing round for exploration. More from The Daily Star Companies and Business The Turkish operator of the shuttered electricity barge said Electricite du Liban would be providing new fuel to restart production, while an Energy Minister source confirmed the previous shipment was tainted. More from The Daily Star Facebook's mobile advertising revenue growth gained momentum in the first three months of the year as the social network sold more ads to users on smartphones