Kurdistan, a mountainous region made up of parts of Turkey, Iraq, Iran, Armenia and Syria, is home to one of the largest ethnic groups in West Asia: the Kurds. Now, most in the West know them for their small, oil-rich autonomous region in northern Iraq called Iraqi Kurdistan — one of the U.S.’ closer allies in the Middle East and a bulwark against the expansion of the so-called Islamic State. What does the success of Iraqi Kurdistan mean for Kurds in the surrounding region?