In the late 1990s, as rebels overthrew the longtime dictator Mobutu Sese Seko in what is now the Democratic Republic of Congo, Claudio Descalzi, then a 41-year-old regional manager for Italian oil ...

The American oil and gas company Chevron Corp. Seeks to expand access to the petrochemical sector and is ready to buy out Phillips 66 Company's stake in the Chevron Phillips Chemical Co. (CPChem) ...