A former Iranian ambassador to Norway also slammed Zarif’s participation in the Oslo Forum. 
“The trip by the Iranian regime’s foreign minister Javad Zarif to Norway takes place amid an unparalleled wave of executions in Iran. Close to 130 people have been hanged in Iran in the past two months alone,” Perviz Khazai said in a statement provided to The Local. 

 
“Zarif is the representative of a regime that has immersed the region in war and crisis through warmongering, export of terrorism, and extremism,” the statement continued.
Khazai, who represents the National Council of Resistance of Iran in the Nordics, said “Zarif ought to face justice for crimes against humanity and war crimes as a senior representative of the most brutal dictatorship after the Second World War for three decades.”

Source: The local, 15 June 2016