"During the government hour in parliament, the Armenian Prime Minister once again invited the former presidents of Armenia to a public debate, conveying his message through Robert Kocharyan's son and advising him to ask his father in the evening if he has anything to say.

A similar call was made by Pashinyan in December of last year, but no one agreed to debate with him."

I corrected some small issues with phrasing and added clarity in a couple of places.