Where: Northern Iraq (this part of Iraq, along with part of Turkey, was to be, at the end of the Ottoman Empire, a separate country known as Kurdistan - it never occurred).
Time period: 1986-1989
Who: Iraq government under Saddam Hussein against the ethnic group known as Kurds.
Types of atrocities: Chemical weapons (mainly Tabun and Sarin gases) were loosed on eight areas and towns killing thousands, wounding and maiming others, and causing tens of thousands to flee as their homes became uninhabitable.
Number of deaths: 100,000-200,000
Mountain and plateau region in southwest Asia near Mount Ararat, where the borders of Iran, Iraq, Syria, Turkey, Armenia, and Azerbaijan meet; area 193,000 sq km/74,600 sq mi; total population 25-30 million. It is the home of the Kurds and is the area over which Kurdish nationalists have traditionally fought to win sovereignty. It is also the name of a northwest Iranian province in the Zagros Mountains, covering 25,000 sq km/9,650 sq mi, population (2001 est) 1,465,000. The chief towns of the region are Kermanshah (Iran); Irbil, Sulaymaniyah, and Kirkuk (Iraq); Divarbakir, Erzurum, andVan (Turkey); and Qamishle (Syria).
From Credo Reference.