The Leader of the Islamic revolution, Ayatollah Seyyed Ali Khamenei has said that these hardhearted mercenaries who open fire on innocent women, children and men are the dependants of the same bogus and duplicitous advocates of human rights.
President Hassan Rouhani says Iran's response to any threat will be effective and harsh, but all those who sponsor the terrorists, giving them logistic, intelligence and media support, must be held accountable.
Many Iranians have reacted to the attack on a military parade in the southwestern city of Ahwaz, calling it an act of cowardice.
World reacted to the news of the terrorist attack to a military parade in Ahvaz on Saturday in which 15 people died and at least 60 more were injured.
The speaker of Iranian Parliament, Ali Larijani has emphasized that the US is waging an economic war against Iranian children, women and hospital patients.
Gunmen opened fire on people from behind a viewing stand in Quds Boulevard of Ahvaz during a morning parade held to mark the former Iraqi dictator Saddam Hussein's invasion of Iran in the 1980s.
Pointing finger at agents of a foreign regime for attack on a military parade in southwestern Iran, foreign minister Mohammad Javad Zarif said Iran will respond "swiftly and decisively" to the attack.
President Hassan Rouhani delivered a speech at the opening of the ceremony in Tehran, which was attended by senior military commanders, including Chief of Staff of the Iranian Armed Forces Major General Mohammad Hossein Baqeri.
25 deaths in a terrorist attack on a military parade in Ahvaz, have been officially confirmed by Khuzestan province deputy governor.
Iranian president Hassan Rouhani has said: "The Islamic Republic will increase its defensive power every day, and with the pressures that are being exerted on Iran, we know the value of our missile defenses more than ever before.