Why did they annul it? I'm assuming they gave a reason, not sure if that's a reasonable assumption.
Made-up reason: Imamoglu transfered to Istanbul University from a foreign university (Cyprus) in 1990. They claimed that university was not accredited by Turkish Higher Education Council. That was not really a requirement for the transfer at the time and the universities used to have more autonomy. Today they also annuled the degrees of 28 more people who did the same thing in 1990, just for the optics. I think one of them is a college professor.
I saw an argument about this latter decision which (rightfully) claimed that, if what happened is lawful, then they should also revoke the diplomas of all students of that college professor.
> In a statement, the university said 38 people had transferred to its management faculty's English-language programme in 1990 in an irregular way.
> The graduations and degrees of 28 of them, including Imamoglu, were annulled as being "void" and due to "clear errors" regarding the regulations of the Higher Education Board (YOK), the school said.