Arturo Cruz Sequeira: the 67-year-old professor and former diplomat, who announced his presidential candidacy two months ago for the conservative Citizen Alliance for Freedom, was among the initial group  detained in early June. Photograph: Inti Ocon/AFP via Getty Images

The government of Nicaraguan president Daniel Ortega arrested five opposition leaders during a major weekend round-up, in what appears to be widesprea(...)

Nicaragua solidarity: Fionnuala Rogerson and Betty Purcell (top row); and Molly O’Duffy and Robin Hanan. Photograph: Bryan O’Brien

Forty years after Nicaragua’s Sandinista revolution you could argue that the troubled country has seen only one real change: the replacement of the ru(...)