Nabucco pipeline (Turkey - Austria gas pipeline) is a proposed natural gas pipeline from Erzurum in Turkey to Baumgarten an der March in Austria diversifying natural gas suppliers and delivery routes for Europe. The pipeline attempts to lessen European dependence on Russian energy. The project is backed by several European Union states and the United States and is seen as rival to the Gazprom-led South Stream pipeline project. At the same time, there are some doubts concerning viability of supplies. The main supplier is expected to be Azerbaijan in cooperation with Turkmenistan, Iraq and Egypt.