The operation involved at least three boats, though only one was captured. One of its commanders sent audio recordings to Venezuelan military and police WhatsApp groups, calling for troops to rebel and take to the streets. Alemán, a Venezuelan lawmaker now living outside the country, said Sunday he had been involved in Alcalá’s operation in Colombia since last year. He said the group had to “make some adjustments” after a shipment of weapons destined for the camps was seized by Colombian authorities in March. Alemán said the plan was for the boats to land at La Guaira, home to Venezuela’s...