They have right to leave !
I had a long interview with Prof. Nasrin Moazzami that is the first biotechnologist expert that established a facualty for that in tehran.
In a part of this interview Dr Moazzami mentioned that because of the hopeless and unemployments between Iranian youth she understand why they are interested to leave Iran. She also talked about the situation of science at the beginning of the Ilamic revolution that fundimentalists thought that women can not teach in university and of course they thought that country can survive without science and only with the help of god!!!!!
Iranian youth experts leave Iran more more and never find fortune inside the country
She also mentioned that many of Iranian youth experts come to her office monthly to find a job but her answer is No! because there are any place for them...when I was talking with herin some moments her tears came to her eyes and she stopped for several.