Energy security remains a key component in realizing the vision of a Europe whole, free and at peace, said Vice President Joe Biden in his recent address to the Atlantic Council Energy and Economic ___1___. While there are serious energy challenges for many countries, it is also a unique moment for Europe to change their __2__. As a matter of economic and national security, said Vice President Biden, “we need governments and the European Commission to work hand-in-hand with the private sector to ensure __3___ in sources of fuel from hydrocarbons to renewables.” This includes the pursuit of more reliable __4__, development of new pipelines and liquefied natural gas facilities, and the promotion of regulatory and technology cooperation to address 21st century energy challenges. We must overcome ___5___ hurdles ( 障碍 ) to complete projects like the Southern Gas Corridor, which will bring gas from the Caspian and __6___ the eastern Mediterranean to European markets in less than five years. There has been some progress on the part of Europe in its crisis contingency ( 应急 ) planning following energy crises in '06, '09, and in 2014. Additional pipelines have been __7___, reverse flows of energy have been made possible and greater energy interconnectedness ( 互联性 ) has been ___8__ by the Baltic and Scandinavian countries for example. But more needs to be done, including integrating ___9____ into the fuel mix. It is also critical to develop new opportunities to bring new sources of supply to Europe. The Southern Corridor pipeline is a case ___10____. With U.S. support, Turkish and Azeri leadership, this project traversing ( 穿越 ) Azerbaijan, through Georgia, Turkey, Greece, Albania, and Italy will bring gas for the first time from the Caspian Sea ( 里海 ) to Europe.