Mandelson writes: "The issue is not biofuels or no biofuels, but the right biofuels. Europe's governments have signed a commitment ensuring that 10% of the petrol in Europe's vehicles in 2020 is made from renewable transport fuels, including biofuels. This will make an important contribution to the EU's efforts to reduce greenhouse gas emissions and promote security of energy supply. But there is an obvious caveat: biofuels must be an environmental policy in pursuit of an environmental outcome - the most sustainable policy is the only right policy".