The two dissidents would be part of largest prisoner exchange in a decade . They were detained in a police crackdown . They represent roughly one-third of all known political prisoners left on the island , according to Cuba 's unofficial Commission on Human Rights and National Reconciliation . Release and visit by Spanish foreign minister .
The two dissidents would be part of largest prisoner exchange in a decade . They were detained in a police crackdown . Release and visit by Spanish foreign minister .