Tehran, April 9 -- Iran's President Masoud Pezeshkian attended a significant commemorative ceremony in Tehran's Republic Square on Thursday, marking a key milestone following the recent shift in the country's leadership.

The President's presence at the event was to observe the 40th day since the death of the former Leader of the Revolution, Ayatollah Seyyed Ali Khamenei.

In a massive display of national mourning, vast crowds of Iranians took to the streets of the capital and across the nation on Thursday to mark the 40th day following the killing of the former Leader of the Islamic Revolution, Ayatollah Seyyed Ali Khamenei, senior military officials, and schoolchildren from Minab, state broadcaster Press TV reported.

The massive mourni...