The landmark deak was agreed today during three-way talks between Russian President Vladimir Putin, Turkmen President Gurbanguly Berdymukhammedov, and Kazakh President Nursultan Nazarbaev in the coastal Turkmen city of Turkmenbashi.
The pipeline would carry natural gas from Turkmenistan to Europe via Kazakhstan and Russia.
In joint declarations, the three leaders said they will sign a treaty by September on building the new pipeline. It is to carry natural gas from Turkmenistan to Europe via Kazakhstan and Russia.
The agreement, along with an accompanying deal to upgrade existing Soviet-era infrastructure in Uzbekistan, is seen as a blow to U.S., European, and Chinese hopes of diverting the flow of Central Asian gas out of Russian hands.
Russian President Vladimir Putin said the deal means "more supplies of energy resources to Europe and the world's markets."
"I am very pleased to note that our decision today fully meets the goals and tasks that were formulated at the Group of Eight [G8] summit in St. Petersburg. Now the aim is to develop new [energy] fields, and this means we are faced with the problem of expanding the transport capacities," Putin said.
Energy Imperialism Accusations
All three leaders sought to play down the diplomatic implications of the pipeline. But the deal comes amid rising Western concerns over Russia's use of its energy riches for political purposes -- a charge Moscow denies.
Turkmen President Gurbanguly Berdymukhammedov praised the agreement: "This project has obvious benefits for all parties. We guarantee the delivery of the required volume of Turkmen natural gas and for the period that will be determined by the results of the reached agreement."
Prior to the signing, Kazakh President Nursultan Nazarbaev, who this week pledged to keep most of his country's oil flowing through Russian pipelines, had called the agreement "a purely pragmatic commercial project," adding: "There is no politics there."
Still, Berdymukhammedov said plans for a rival U.S.-backed trans-Caspian pipeline that bypasses Russia had "not been completely dropped."