ROUGH CUT (NO REPORTER NARRATION) Iranian President Hassan Rouhani honored the 25 people killed at a military parade in Ahvaz, Iran, before an address at a Nelson Mandela peace event at the United Nations on Monday.

"I would like to send prayers for a peaceful rest to the souls of martyrs who were martyred on Saturday during the cowardly terrorist attacks against them in the city of Ahvaz," Rouhani said, "and announce here the ever-more-resolute decision of my nation in the fight against terrorism in all of its forms." Gunmen fired on a viewing stand in Ahvaz on Saturday where Iranian officials had gathered to watch an annual parade marking the start of Iran's 1980-88 war with Iraq.

Twelve members of the elite Islamic Revolutionary Guard Corps were among the 25 dead, making it one of the worst such attacks against Iran's most powerful military force.

He made no mention of a statement he made in a meeting with senior Iranian media editors that if U.S. President Donald Trump wants to talk to Iran the he "first should return to the nuclear deal."