 Most engaged is the President of Romania, Traian Băsescu, who has cited a study estimating the benefits of the project for Romania over 20 years of operation in the range between US$2.27 to 4.39 billion.The Government of Serbia is also politically motivated so as to decrease its dependence on crude oil supply from Croatia.In 2006, the Government of Slovenia did not support the project because the long stretch would pass the environmentally sensitive Karst terrain and no national interest exists regarding oil supply.