Acting Secretary of State John Sullivan, center, pose with Cuban civil society leaders at US Embassy home in Lima, Peru, Thursday, April 12, 2018. (AP

Acting Secretary of State John Sullivan, center, pose with Cuban civil society leaders at US Embassy home in Lima, Peru, Thursday, April 12, 2018. (AP Photo/Martin Mejia)

Acting Secretary of State John Sullivan, center, pose with Cuban civil society leaders at US Embassy home in Lima, Peru, Thursday, April 12, 2018. (AP Photo/Martin Mejia)