"WASHINGTON — The United States and Europe kicked off a joint effort on Tuesday intended to curb Russia’s long-term ability to develop new oil resources, taking aim at the Kremlin’s premier source of wealth and power in retaliation for its intervention in Ukraine.
In announcing coordinated sanctions, American and European leaders went beyond previous moves against banking and defense industries in an effort to curtail Russia’s access to Western technology as it seeks to tap new Arctic, deep sea and shale oil reserves. The goal was not to inhibit current oil production but to cloud Russia’s energy future.
The new strategy took direct aim at the economic foundation of Russia, which holds the largest combined oil and gas reserves in the world.
The growth of the oil industry in the last two decades has powered Russia’s economic and geopolitical resurgence since the collapse of the Soviet Union and enriched allies of President Vladimir V. Putin. Russia pumps about 10.5 million barrels of oil a day, making it among the largest producers."