Who are the Kurds?

Between 20 and 30 million Kurds inhabit a mountainous region straddling the borders of Turkey, Iraq, Syria, Iran and Armenia. They make up the fourth-largest ethnic group in the Middle East, but they have never obtained a permanent nation state.

In recent decades, Kurds have increasingly influenced regional developments, fighting for autonomy in Turkey and playing prominent roles in the conflicts in Iraq and Syria, where they have resisted the advance of the jihadist group, Islamic State (IS).

Where do they come from?

The Kurds historically led nomadic lives revolving around sheep and goat herding throughout the Mesopotamian plains and the highlands in what are now south-eastern Turkey, north-eastern Syria, northern Iraq, north-western Iran and south-western Armenia.

Kurds in Syria

Kurds make up between 7% and 10% of Syria's population, with most living in the cities of Damascus and Aleppo, and in three, non-contiguous areas around Kobane, the north-western town of Afrin, and the north-eastern city of Qamishli.

Syria's Kurds have long been suppressed and denied basic rights. Some 300,000 have been denied citizenship since the 1960s, and Kurdish land has been confiscated and redistributed to Arabs in an attempt to "Arabize" Kurdish regions. The state has also sought to limit Kurdish demands for greater autonomy by cracking down on protests and arresting political leaders.

Kurds in Iraq

Kurds make up between 7% and 10% of Syria's population, with most living in the cities of Damascus and Aleppo, and in three, non-contiguous areas around Kobane, the north-western town of Afrin, and the north-eastern city of Qamishli.

Syria's Kurds have long been suppressed and denied basic rights. Some 300,000 have been denied citizenship since the 1960s, and Kurdish land has been confiscated and redistributed to Arabs in an attempt to "Arabize" Kurdish regions. The state has also sought to limit Kurdish demands for greater autonomy by cracking down on protests and arresting political leaders.

In the late 1970s, the government began settling Arabs in areas with Kurdish majorities, particularly around the oil-rich city of Kirkuk, and forcibly relocating Kurds. The policy was accelerated in the 1980s during the Iran-Iraq War, in which the Kurds backed the Islamic republic. In 1988, Saddam Hussein unleashed a campaign of vengeance on the Kurds that included the poison-gas attack on Halabja.

When Iraq was defeated in the 1991 Gulf War Barzani's son, Massoud, led a Kurdish rebellion. Its violent suppression prompted the US and its allies to impose a no-fly zone in the north that allowed Kurds to enjoy self-rule. The KDP and PUK agreed to share power, but tensions rose and a four-year internal conflict erupted in 1994.

The two parties co-operated with the US-led invasion of Iraq in 2003 that toppled Saddam Hussein and have participated in all governments formed since then. They have also governed in coalition in the Kurdistan Regional Government (KRG), created in 2005 to administer the three provinces of Dohuk, Irbil and Sulaimaniya.