With few natural energy resources, Moldova imports almost all of its energy supplies from Russia and Ukraine. Moldova's dependence on Russian energy is underscored by a growing US$5 billion debt to Russian natural gas supplier Gazprom, largely the result of unreimbursed natural gas consumption in the separatist Transnistria region. In August 2013, work began on a new pipeline between Moldova and Romania that may eventually break Russia's monopoly on Moldova's gas supplies. Moldova is a partner country of the EU INOGATE energy programme, which has four key topics: enhancing energy security, convergence of member state energy markets on the basis of EU internal energy market principles, supporting sustainable energy development, and attracting investment for energy projects of common and regional interest.