President Donald Trump has touted Venezuela's oil, inviting executives to the White House on Friday to discuss drilling. "We want stability," he said this week, "but we do want democracy."

Four Venezuelan oil tankers reportedly return to port after operating in "dark mode" as the U.S. seizes vessels amid Trump's push to acquire oil.

Two U.S. officials confirmed to CBS News that the Coast Guard, supported by the Navy, were the process of seizing the Olina oil tanker.

Follow live updates as developments emerge on Venezuela's future and U.S. allies respond to Trump's threats against Greenland.

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

Trump has cited Venezuela’s oil resources as motivation for capturing the nation’s leader—here’s the geology behind the news

First, the country must kick out China, Russia, Iran, and Cuba and sever economic ties, the sources said. Second, Venezuela must agree to partner exclusively with the U.S. on oil production and favor America when selling heavy crude oil, they added.

Venezuelan leader Nicolás Maduro was captured in an overnight attack, some Democrats and a Republican are pushing to block future U.S. strikes.