Discover the top Russian oil companies by oil production volume and their domestic and international business operations.

The country’s oil industry has undergone major shifts and two waves of nationalization since its first well started pumping in 1914.

In a social media post on Tuesday, Trump said Venezuela would hand over 30 to 50 million barrels of oil to the U.S., which in turn would sell them at their market price. The resulting funds -- as much as $2.8 billion at current prices -- will “benefit the people of Venezuela and the United States,” Trump said.

Oil prices rose on Friday on concerns about potential disruption to Iran's output and uncertainty about supply from Venezuela.

U.S. oil prices on Friday settled at their highest level since early December, up by more than 3% for the week. Analysts cited threats to Iran’s oil production as the biggest reason for the rise, even as traders continue to closely watch developments in Venezuela.

The United States seized another oil tanker overnight in the Caribbean Sea, the fifth vessel taken in recent weeks as the Trump Administration intensifies a sweeping effort to choke off Venezuela’s oil exports and assert control over a maritime trade it says is riddled with sanctions evaders.

Leaders from more than a dozen oil companies with major operations in Houston – including Exxon, Chevron, ConocoPhillips - gathered at the White House.