Venezuela Frees Oil Expert Whose Detention Raised Red Flags

Venezuela has released a prominent oil consultant who also has US citizenship after four days in detention, a case that highlights the country’s persistent risks as the Washington-backed administration in Caracas seeks to revive the petroleum industry.

Evanan Romero, 86, is a Venezuelan-born, Houston-based consultant for international oil companies and advises opposition leader María Corina Machado.