Ill and long isolated, Iranian opposition leaders scent freedom

DUBAI (Reuters) - Four months after President Hassan Rouhani's election, Iran is reviewing the house arrest of two opposition leaders, but conservatives may fear the consequences of freeing men who remain heroes to many Iranians.

Mirhossein Mousavi and Mehdi Karoubi, candidates who led the "Green Movement" that disputed the 2009 re-election of Mahmoud Ahmadinejad, have never been charged with any crime. Yet both men, former top officials now in their 70s and in ill health, have been held under tight surveillance since early 2011.