A single line buried in an old contract kicked off a 20-month battle between ExxonMobil and Chevron over control of Guyana’s Stabroek Block, the biggest offshore oil discovery in years. The ...

The story behind how it unfolded shows how American oil executives’ usual cordial relationships were pushed to the breaking ...

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The 20-month feud between the Western Hemisphere’s two most powerful oil companies over the biggest offshore discovery in a generation hinged on a single clause of a contract few people have ever seen ...