economics Politics Jamal Walker ATLANTIC COUNCIL, BLOOMBERG, CARACAS, CHEVRON, CHEVRON CORP, CUBA, DEMOCRACY, ECONOMICS, EUROPE, GEOFF RAMSEY, LEADERSHIP, LEGAL ISSUES, MA, MADURO, MARKET, MAUREL & PROM, NATIONAL SECURITY, NICOLÁS MADURO, NICOLAS MADURO, NORTH AMERICA, PDVSA, PETROLEOS DE VENEZUELA SA, REPSOL SA, SOUTH AMERICA, SPAIN, UNITED STATES, VENEZUELA, WASHINGTON Chevron’s Exit Could Darken Venezuela’s Oil Sector and Economy