”More on double standards concerning use of gas in Syria and Iraq”

The quote is fetched from http://en.wikipedia.org/wiki/Iran%E2%80%93Iraq_War#Use_of_chemical_weapons_by_Iraq

” Use of chemical weapons by Iraq

See also: Halabja poison gas attack, Iraqi chemical weapons programme, and Second Battle of al-Faw

Iranian soldiers had to use full PPE in front line of Iran–Iraq War

In a declassified 1991 report, the CIA estimated that Iran had suffered more than 50,000 casualties from Iraq's use of several chemical weapons,^[173] though current estimates are more than 100,000 as the long-term effects continue to cause casualties.^[34][174] The official CIA estimate did not include the civilian population contaminated in bordering towns or the children and relatives of veterans, many of whom have developed blood, lung and skin complications, according to the Organization for Veterans of Iran. According to a 2002 article in the Star-Ledger, 20,000 Iranian soldiers were killed on the spot by nerve gas. As of 2002, 5,000 of the 90,000 survivors continue to seek regular medical treatment, while 1,000 are hospital inpatients.^[175][176]

Victims of the 1987 chemical attack on Sardasht, Iran

According to Iraqi documents, assistance in developing chemical weapons was obtained from firms in many countries, including the United States, West Germany, the Netherlands, the United Kingdom, and France. A report stated that Dutch, Australian, Italian, French and both West and East German companies were involved in the export of raw materials to Iraqi chemical weapons factories.^[177] Declassified CIA documents show that the United States was providing reconnaissance intelligence to Iraq around 1987–88 which was then used to launch chemical weapon attacks on Iranian troops and that CIA fully knew that chemical weapons would be deployed and sarin attacks followed.^[178]
On 21 March 1986, the United Nations Security Council made a declaration stating that "members are profoundly concerned by the unanimous conclusion of the specialists that chemical weapons on many occasions have been used by Iraqi forces against Iranian troops, and the members of the Council strongly condemn this continued use of chemical weapons in clear violation of the Geneva Protocol of 1925, which prohibits the use in war of chemical weapons." The United States was the only member who voted against the issuance of this statement.^{[179][note 5]”}