Russian energy giant Gazprom estimates the cost of constructing the first branch of the Turkish Stream pipeline at €4.3 billion ($4.72 billion), while the overall price tag for all four legs of this project are estimated at €11.4 billion, First Deputy Head of Gazprom's Project Management Department Aleksei Serebryakov said Monday.

As at the end of 2014, Africa has proven natural gas reserves of just under 500 trillion cubic feet (Tcf) with 90% of the continent’s annual natural gas production still coming from Nigeria, Libya, Algeria and Egypt.

The U.S. declared one of Russia’s largest offshore oil and natural gas fields off limits to American tools and expertise, potentially disrupting Royal Dutch Shell Plc’s plans to liquefy the fossil fuel for export.

“Russia sits on 25% of the world’s gas reserves and is very, very close to markets that we are very familiar with,” Van Beurden said July 30, on the sidelines of the company’s earnings presentation. Shell is also pushing “to see how we can work with Gazprom internationally.”

The Arctic has become a theatre for rival claims over a sea floor believed to be rich in minerals, oil and gas.

The United States is now the world’s leading producer of natural gas. With LNG exports scheduled to begin within the next six months, America’s oil and gas renaissance will soon provide both substantial domestic and foreign economic benefits. If US LNG can be imported into regions where there is only a single, monopolistic producer, then strategic benefits could accrue as well.

In the medium term, Iran’s gas will not be able to compete with the Russian gas in the European market.

Seven months after Russia made the latest changes to its oil tax regime, the industry seems to have been able to adapt more easily to the new landscape than had been expected at the turn of the year. However, market experts have warned that the government must consider more fiscal reforms as the current system is continuing to distort the sector. The so-called tax maneuver, which includes a phased reduction in export duty for crude and oil products over 2015-2017 and an increase in oil extraction tax, was introduced in January.

US LNG export projects face an uncertain future despite continued discoveries and production growth, a Brookings Institution analyst said. “More liquefaction capacity may be coming than markets can absorb,” warned Tim Boersma, acting director of Brookings’s Energy Security and Climate Initiative.

In May 2008, the company’s market capitalization reached $367.27 billion, making it one of world’s most valuable companies, according to a survey compiled by the Financial Times. Gazprom’s deputy chair, Alexander Medvedev, repeatedly predicted at the time that within a decade the Russian energy giant could be worth $1 trillion.