Teherán - Iranian President Hassan Rouhani has called for the formation of an impartial international fact-finding committee to look into a purported chemical attack in Syria''s Idlib Province.

'An international fact-finding mission should be formed to shed light on the issue and US agressive polcies should be rejected,like the firing of 59 cruise missiles against and Air Force base' Rouhani said in Tehran.

'The issue should rather be investigated by impartial countries to find out where chemical weapons had come from, who had brought them in or whether there were any chemical weapons involved or not,' he added.

Russia and Syria say the army's airstrike had targeted a depot where terrorists stockpiled chemical weapons.

Using the Idlib tragedy as a pretext, US President Donald Trump ordered Washington's warships in the eastern Mediterranean to launch a missile strike against Shayrat Airfield in Syria's Homs Province on Friday, which Washington alleged was the origin of the alleged chemical attacks.

Rouhani slammed the US for taking unilateral military action against Syria and for the killing of innocents, saying the North Americans see themselves as the 'world leader' and 'world's gendarme.'

'The man, who now rules the US, claimed that he wanted to fight terrorists, but with this move, all terrorists in Syria are happy and celebrating,' he added.

The Iranian chief executive further denounced the assault on Shayrat Airfield as 'a heinous and outrageous act of aggression' that ran contrary to all international principles, adding that the North Americans even bypassed their own Congress.

President Rouhani had censured the attack and said the aggression would boost terrorism in the region and strengthen lawlessness and instability in the world.

The US aggression has drawn widespread condemnations, with Syria accusing Washington of acting as an 'accomplice' to terrorist groups operating in the Arab country.

Also the Chief of the Foreing Commission of the Iranian Parliament, Alaeddin Boroujerdi,said that this kind of actions probed the defeat of the policies of an arrogant power.