More than 1,700 deported during crackdown on smuggling.
Men received sentences of 520 years for kidnap and murder of 13 people.
Families of 43 missing students seek international commission.
The agreement is seen as a major breakthrough after nearly three years of peace talks hosted by Cuba.
The two met after Pope Francis gave a homily in which he urged Cubans to avoid selfishness.
Sandra Torres will stand against a television comedian in run-off election in October.
Will release more than 3,500 prisoners in goodwill gesture.
Leopoldo Lopez convicted for inciting violence during 2014 protests.
Hundreds still believed to be missing under tons of rock and earth.
Group to dedicate itself to "political and cultural training," leader said.
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