The effort to ascertain the fate of our missing persons is among the highest priorities of the President of the Republic, Nikos Christodoulides, said on Sunday Anna Aristotelous, Head of Humanitarian Affairs of Missing and Enclaved Persons, addressing an event organised by the Philanthropic charity organisation 'Alkyonides' as part of the first screening of the documentary "Where are they?", by Greek journalist Nikos Aslanidis, which took place at the Attikon Cultural Center in Paphos.